From 71abdc15adf8c702a1dd535f8e30df50758848d2 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Fri, 6 Jun 2014 14:35:35 -0700 Subject: mm: vmscan: clear kswapd's special reclaim powers before exiting When kswapd exits, it can end up taking locks that were previously held by allocating tasks while they waited for reclaim. Lockdep currently warns about this: On Wed, May 28, 2014 at 06:06:34PM +0800, Gu Zheng wrote: > inconsistent {RECLAIM_FS-ON-W} -> {IN-RECLAIM_FS-R} usage. > kswapd2/1151 [HC0[0]:SC0[0]:HE1:SE1] takes: > (&sig->group_rwsem){+++++?}, at: exit_signals+0x24/0x130 > {RECLAIM_FS-ON-W} state was registered at: > mark_held_locks+0xb9/0x140 > lockdep_trace_alloc+0x7a/0xe0 > kmem_cache_alloc_trace+0x37/0x240 > flex_array_alloc+0x99/0x1a0 > cgroup_attach_task+0x63/0x430 > attach_task_by_pid+0x210/0x280 > cgroup_procs_write+0x16/0x20 > cgroup_file_write+0x120/0x2c0 > vfs_write+0xc0/0x1f0 > SyS_write+0x4c/0xa0 > tracesys+0xdd/0xe2 > irq event stamp: 49 > hardirqs last enabled at (49): _raw_spin_unlock_irqrestore+0x36/0x70 > hardirqs last disabled at (48): _raw_spin_lock_irqsave+0x2b/0xa0 > softirqs last enabled at (0): copy_process.part.24+0x627/0x15f0 > softirqs last disabled at (0): (null) > > other info that might help us debug this: > Possible unsafe locking scenario: > > CPU0 > ---- > lock(&sig->group_rwsem); > > lock(&sig->group_rwsem); > > *** DEADLOCK *** > > no locks held by kswapd2/1151. > > stack backtrace: > CPU: 30 PID: 1151 Comm: kswapd2 Not tainted 3.10.39+ #4 > Call Trace: > dump_stack+0x19/0x1b > print_usage_bug+0x1f7/0x208 > mark_lock+0x21d/0x2a0 > __lock_acquire+0x52a/0xb60 > lock_acquire+0xa2/0x140 > down_read+0x51/0xa0 > exit_signals+0x24/0x130 > do_exit+0xb5/0xa50 > kthread+0xdb/0x100 > ret_from_fork+0x7c/0xb0 This is because the kswapd thread is still marked as a reclaimer at the time of exit. But because it is exiting, nobody is actually waiting on it to make reclaim progress anymore, and it's nothing but a regular thread at this point. Be tidy and strip it of all its powers (PF_MEMALLOC, PF_SWAPWRITE, PF_KSWAPD, and the lockdep reclaim state) before returning from the thread function. Signed-off-by: Johannes Weiner Reported-by: Gu Zheng Cc: Yasuaki Ishimatsu Cc: Tang Chen Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/vmscan.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/vmscan.c b/mm/vmscan.c index 9149444f947d..05d41c0d7f6c 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -3372,7 +3372,10 @@ static int kswapd(void *p) } } + tsk->flags &= ~(PF_MEMALLOC | PF_SWAPWRITE | PF_KSWAPD); current->reclaim_state = NULL; + lockdep_clear_current_reclaim_state(); + return 0; } -- cgit v1.2.3 From 844e4d66f4ec3b6b6d3bcfcfba3ade2b962771e2 Mon Sep 17 00:00:00 2001 From: Joonsoo Kim Date: Fri, 6 Jun 2014 14:35:36 -0700 Subject: slub: search partial list on numa_mem_id(), instead of numa_node_id() Currently, if allocation constraint to node is NUMA_NO_NODE, we search a partial slab on numa_node_id() node. This doesn't work properly on a system having memoryless nodes, since it can have no memory on that node so there must be no partial slab on that node. On that node, page allocation always falls back to numa_mem_id() first. So searching a partial slab on numa_node_id() in that case is the proper solution for the memoryless node case. Signed-off-by: Joonsoo Kim Acked-by: Nishanth Aravamudan Acked-by: David Rientjes Acked-by: Christoph Lameter Cc: Pekka Enberg Cc: Wanpeng Li Cc: Han Pingtian Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/slub.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/slub.c b/mm/slub.c index fdf0fe4da9a9..b2b047327d76 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1726,7 +1726,7 @@ static void *get_partial(struct kmem_cache *s, gfp_t flags, int node, struct kmem_cache_cpu *c) { void *object; - int searchnode = (node == NUMA_NO_NODE) ? numa_node_id() : node; + int searchnode = (node == NUMA_NO_NODE) ? numa_mem_id() : node; object = get_partial_node(s, get_node(s, searchnode), c, flags); if (object || node != NUMA_NO_NODE) -- cgit v1.2.3 From f3ae1b97be14ff10da8f02309ba04bed2ba035bc Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:35:37 -0700 Subject: fs/ceph: replace pr_warning by pr_warn Update the last pr_warning callsites in fs branch Signed-off-by: Fabian Frederick Cc: Sage Weil Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ceph/addr.c | 2 +- fs/ceph/inode.c | 2 +- fs/ceph/mds_client.c | 6 +++--- fs/ceph/mdsmap.c | 2 +- 4 files changed, 6 insertions(+), 6 deletions(-) diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index b53278c9fd97..65a30e817dd8 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -694,7 +694,7 @@ static int ceph_writepages_start(struct address_space *mapping, (wbc->sync_mode == WB_SYNC_ALL ? "ALL" : "HOLD")); if (fsc->mount_state == CEPH_MOUNT_SHUTDOWN) { - pr_warning("writepage_start %p on forced umount\n", inode); + pr_warn("writepage_start %p on forced umount\n", inode); return -EIO; /* we're in a forced umount, don't write! */ } if (fsc->mount_options->wsize && fsc->mount_options->wsize < wsize) diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 233c6f96910a..e4fff9ff1c27 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -821,7 +821,7 @@ no_change: spin_unlock(&ci->i_ceph_lock); } } else if (cap_fmode >= 0) { - pr_warning("mds issued no caps on %llx.%llx\n", + pr_warn("mds issued no caps on %llx.%llx\n", ceph_vinop(inode)); __ceph_get_fmode(ci, cap_fmode); } diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 2b4d093d0563..9a33b98cb000 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -2218,13 +2218,13 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg) /* dup? */ if ((req->r_got_unsafe && !head->safe) || (req->r_got_safe && head->safe)) { - pr_warning("got a dup %s reply on %llu from mds%d\n", + pr_warn("got a dup %s reply on %llu from mds%d\n", head->safe ? "safe" : "unsafe", tid, mds); mutex_unlock(&mdsc->mutex); goto out; } if (req->r_got_safe && !head->safe) { - pr_warning("got unsafe after safe on %llu from mds%d\n", + pr_warn("got unsafe after safe on %llu from mds%d\n", tid, mds); mutex_unlock(&mdsc->mutex); goto out; @@ -3525,7 +3525,7 @@ static void peer_reset(struct ceph_connection *con) struct ceph_mds_session *s = con->private; struct ceph_mds_client *mdsc = s->s_mdsc; - pr_warning("mds%d closed our session\n", s->s_mds); + pr_warn("mds%d closed our session\n", s->s_mds); send_mds_reconnect(mdsc, s); } diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c index 132b64eeecd4..261531e55e9d 100644 --- a/fs/ceph/mdsmap.c +++ b/fs/ceph/mdsmap.c @@ -62,7 +62,7 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end) ceph_decode_16_safe(p, end, version, bad); if (version > 3) { - pr_warning("got mdsmap version %d > 3, failing", version); + pr_warn("got mdsmap version %d > 3, failing", version); goto bad; } -- cgit v1.2.3 From 3364d113c8209feee425b0f8a770b51e6132c43f Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:35:38 -0700 Subject: fs/ceph/debugfs.c: replace seq_printf by seq_puts Replace seq_printf where possible. Signed-off-by: Fabian Frederick Cc: Sage Weil Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ceph/debugfs.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c index 16b54aa31f08..5a743ac141ab 100644 --- a/fs/ceph/debugfs.c +++ b/fs/ceph/debugfs.c @@ -71,9 +71,9 @@ static int mdsc_show(struct seq_file *s, void *p) seq_printf(s, "%s", ceph_mds_op_name(req->r_op)); if (req->r_got_unsafe) - seq_printf(s, "\t(unsafe)"); + seq_puts(s, "\t(unsafe)"); else - seq_printf(s, "\t"); + seq_puts(s, "\t"); if (req->r_inode) { seq_printf(s, " #%llx", ceph_ino(req->r_inode)); @@ -119,7 +119,7 @@ static int mdsc_show(struct seq_file *s, void *p) seq_printf(s, " %s", req->r_path2); } - seq_printf(s, "\n"); + seq_puts(s, "\n"); } mutex_unlock(&mdsc->mutex); -- cgit v1.2.3 From ee1d90146815fdc8d653c558b327fff2acba041d Mon Sep 17 00:00:00 2001 From: Ales Novak Date: Fri, 6 Jun 2014 14:35:39 -0700 Subject: drivers/rtc/interface.c: fix infinite loop in initializing the alarm In __rtc_read_alarm(), if the alarm time retrieved by rtc_read_alarm_internal() from the device contains invalid values (e.g. month=2,mday=31) and the year not set (=-1), the initialization will loop infinitely because the year-fixing loop expects the time being invalid due to leap year. Fix reduces the loop to the leap years and adds final validity check. Signed-off-by: Ales Novak Acked-by: Alessandro Zummo Reported-by: Jiri Bohac Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/interface.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index c2eff6082363..5813fa52c3d4 100644 --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c @@ -292,7 +292,8 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) dev_dbg(&rtc->dev, "alarm rollover: %s\n", "year"); do { alarm->time.tm_year++; - } while (rtc_valid_tm(&alarm->time) != 0); + } while (!is_leap_year(alarm->time.tm_year + 1900) + && rtc_valid_tm(&alarm->time) != 0); break; default: @@ -300,7 +301,16 @@ int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) } done: - return 0; + err = rtc_valid_tm(&alarm->time); + + if (err) { + dev_warn(&rtc->dev, "invalid alarm value: %d-%d-%d %d:%d:%d\n", + alarm->time.tm_year + 1900, alarm->time.tm_mon + 1, + alarm->time.tm_mday, alarm->time.tm_hour, alarm->time.tm_min, + alarm->time.tm_sec); + } + + return err; } int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) -- cgit v1.2.3 From c3811711a6fd3965bfd8c782fa5c014aecaeeffc Mon Sep 17 00:00:00 2001 From: Loc Ho Date: Fri, 6 Jun 2014 14:35:40 -0700 Subject: Documentation/devicetree/bindings: add documentation for the APM X-Gene SoC RTC DTS binding Signed-off-by: Rameshwar Prasad Sahu Signed-off-by: Loc Ho Cc: Jon Masters Cc: Alessandro Zummo Cc: Catalin Marinas Cc: Will Deacon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- .../devicetree/bindings/rtc/xgene-rtc.txt | 28 ++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 Documentation/devicetree/bindings/rtc/xgene-rtc.txt diff --git a/Documentation/devicetree/bindings/rtc/xgene-rtc.txt b/Documentation/devicetree/bindings/rtc/xgene-rtc.txt new file mode 100644 index 000000000000..fd195c358446 --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/xgene-rtc.txt @@ -0,0 +1,28 @@ +* APM X-Gene Real Time Clock + +RTC controller for the APM X-Gene Real Time Clock + +Required properties: +- compatible : Should be "apm,xgene-rtc" +- reg: physical base address of the controller and length of memory mapped + region. +- interrupts: IRQ line for the RTC. +- #clock-cells: Should be 1. +- clocks: Reference to the clock entry. + +Example: + +rtcclk: rtcclk { + compatible = "fixed-clock"; + #clock-cells = <1>; + clock-frequency = <100000000>; + clock-output-names = "rtcclk"; +}; + +rtc: rtc@10510000 { + compatible = "apm,xgene-rtc"; + reg = <0x0 0x10510000 0x0 0x400>; + interrupts = <0x0 0x46 0x4>; + #clock-cells = <1>; + clocks = <&rtcclk 0>; +}; -- cgit v1.2.3 From f12d869538def2dacf86b8042d8b1b77407ec535 Mon Sep 17 00:00:00 2001 From: Loc Ho Date: Fri, 6 Jun 2014 14:35:42 -0700 Subject: drivers/rtc: add APM X-Gene SoC RTC driver Add support for the APM X-Gene SoC RTC driver. Signed-off-by: Rameshwar Prasad Sahu Signed-off-by: Loc Ho Cc: Jon Masters Cc: Alessandro Zummo Cc: Catalin Marinas Cc: Will Deacon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/Kconfig | 9 ++ drivers/rtc/Makefile | 1 + drivers/rtc/rtc-xgene.c | 278 ++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 288 insertions(+) create mode 100644 drivers/rtc/rtc-xgene.c diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 2e565f8e5165..ac4fa56280cd 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -1327,6 +1327,15 @@ config RTC_DRV_MOXART This driver can also be built as a module. If so, the module will be called rtc-moxart +config RTC_DRV_XGENE + tristate "APM X-Gene RTC" + help + If you say yes here you get support for the APM X-Gene SoC real time + clock. + + This driver can also be built as a module, if so, the module + will be called "rtc-xgene". + comment "HID Sensor RTC drivers" config RTC_DRV_HID_SENSOR_TIME diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index 40a09915c8f6..4545b4a88f30 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -135,5 +135,6 @@ obj-$(CONFIG_RTC_DRV_VT8500) += rtc-vt8500.o obj-$(CONFIG_RTC_DRV_WM831X) += rtc-wm831x.o obj-$(CONFIG_RTC_DRV_WM8350) += rtc-wm8350.o obj-$(CONFIG_RTC_DRV_X1205) += rtc-x1205.o +obj-$(CONFIG_RTC_DRV_XGENE) += rtc-xgene.o obj-$(CONFIG_RTC_DRV_SIRFSOC) += rtc-sirfsoc.o obj-$(CONFIG_RTC_DRV_MOXART) += rtc-moxart.o diff --git a/drivers/rtc/rtc-xgene.c b/drivers/rtc/rtc-xgene.c new file mode 100644 index 000000000000..14129cc85bdb --- /dev/null +++ b/drivers/rtc/rtc-xgene.c @@ -0,0 +1,278 @@ +/* + * APM X-Gene SoC Real Time Clock Driver + * + * Copyright (c) 2014, Applied Micro Circuits Corporation + * Author: Rameshwar Prasad Sahu + * Loc Ho + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* RTC CSR Registers */ +#define RTC_CCVR 0x00 +#define RTC_CMR 0x04 +#define RTC_CLR 0x08 +#define RTC_CCR 0x0C +#define RTC_CCR_IE BIT(0) +#define RTC_CCR_MASK BIT(1) +#define RTC_CCR_EN BIT(2) +#define RTC_CCR_WEN BIT(3) +#define RTC_STAT 0x10 +#define RTC_STAT_BIT BIT(0) +#define RTC_RSTAT 0x14 +#define RTC_EOI 0x18 +#define RTC_VER 0x1C + +struct xgene_rtc_dev { + struct rtc_device *rtc; + struct device *dev; + unsigned long alarm_time; + void __iomem *csr_base; + struct clk *clk; + unsigned int irq_wake; +}; + +static int xgene_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + struct xgene_rtc_dev *pdata = dev_get_drvdata(dev); + + rtc_time_to_tm(readl(pdata->csr_base + RTC_CCVR), tm); + return rtc_valid_tm(tm); +} + +static int xgene_rtc_set_mmss(struct device *dev, unsigned long secs) +{ + struct xgene_rtc_dev *pdata = dev_get_drvdata(dev); + + /* + * NOTE: After the following write, the RTC_CCVR is only reflected + * after the update cycle of 1 seconds. + */ + writel((u32) secs, pdata->csr_base + RTC_CLR); + readl(pdata->csr_base + RTC_CLR); /* Force a barrier */ + + return 0; +} + +static int xgene_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct xgene_rtc_dev *pdata = dev_get_drvdata(dev); + + rtc_time_to_tm(pdata->alarm_time, &alrm->time); + alrm->enabled = readl(pdata->csr_base + RTC_CCR) & RTC_CCR_IE; + + return 0; +} + +static int xgene_rtc_alarm_irq_enable(struct device *dev, u32 enabled) +{ + struct xgene_rtc_dev *pdata = dev_get_drvdata(dev); + u32 ccr; + + ccr = readl(pdata->csr_base + RTC_CCR); + if (enabled) { + ccr &= ~RTC_CCR_MASK; + ccr |= RTC_CCR_IE; + } else { + ccr &= ~RTC_CCR_IE; + ccr |= RTC_CCR_MASK; + } + writel(ccr, pdata->csr_base + RTC_CCR); + + return 0; +} + +static int xgene_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct xgene_rtc_dev *pdata = dev_get_drvdata(dev); + unsigned long rtc_time; + unsigned long alarm_time; + + rtc_time = readl(pdata->csr_base + RTC_CCVR); + rtc_tm_to_time(&alrm->time, &alarm_time); + + pdata->alarm_time = alarm_time; + writel((u32) pdata->alarm_time, pdata->csr_base + RTC_CMR); + + xgene_rtc_alarm_irq_enable(dev, alrm->enabled); + + return 0; +} + +static const struct rtc_class_ops xgene_rtc_ops = { + .read_time = xgene_rtc_read_time, + .set_mmss = xgene_rtc_set_mmss, + .read_alarm = xgene_rtc_read_alarm, + .set_alarm = xgene_rtc_set_alarm, + .alarm_irq_enable = xgene_rtc_alarm_irq_enable, +}; + +static irqreturn_t xgene_rtc_interrupt(int irq, void *id) +{ + struct xgene_rtc_dev *pdata = (struct xgene_rtc_dev *) id; + + /* Check if interrupt asserted */ + if (!(readl(pdata->csr_base + RTC_STAT) & RTC_STAT_BIT)) + return IRQ_NONE; + + /* Clear interrupt */ + readl(pdata->csr_base + RTC_EOI); + + rtc_update_irq(pdata->rtc, 1, RTC_IRQF | RTC_AF); + + return IRQ_HANDLED; +} + +static int xgene_rtc_probe(struct platform_device *pdev) +{ + struct xgene_rtc_dev *pdata; + struct resource *res; + int ret; + int irq; + + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + platform_set_drvdata(pdev, pdata); + pdata->dev = &pdev->dev; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + pdata->csr_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(pdata->csr_base)) + return PTR_ERR(pdata->csr_base); + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(&pdev->dev, "No IRQ resource\n"); + return irq; + } + ret = devm_request_irq(&pdev->dev, irq, xgene_rtc_interrupt, 0, + dev_name(&pdev->dev), pdata); + if (ret) { + dev_err(&pdev->dev, "Could not request IRQ\n"); + return ret; + } + + pdata->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(pdata->clk)) { + dev_err(&pdev->dev, "Couldn't get the clock for RTC\n"); + return -ENODEV; + } + clk_prepare_enable(pdata->clk); + + /* Turn on the clock and the crystal */ + writel(RTC_CCR_EN, pdata->csr_base + RTC_CCR); + + device_init_wakeup(&pdev->dev, 1); + + pdata->rtc = devm_rtc_device_register(&pdev->dev, pdev->name, + &xgene_rtc_ops, THIS_MODULE); + if (IS_ERR(pdata->rtc)) { + clk_disable_unprepare(pdata->clk); + return PTR_ERR(pdata->rtc); + } + + /* HW does not support update faster than 1 seconds */ + pdata->rtc->uie_unsupported = 1; + + return 0; +} + +static int xgene_rtc_remove(struct platform_device *pdev) +{ + struct xgene_rtc_dev *pdata = platform_get_drvdata(pdev); + + xgene_rtc_alarm_irq_enable(&pdev->dev, 0); + device_init_wakeup(&pdev->dev, 0); + clk_disable_unprepare(pdata->clk); + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int xgene_rtc_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct xgene_rtc_dev *pdata = platform_get_drvdata(pdev); + int irq; + + irq = platform_get_irq(pdev, 0); + if (device_may_wakeup(&pdev->dev)) { + if (!enable_irq_wake(irq)) + pdata->irq_wake = 1; + } else { + xgene_rtc_alarm_irq_enable(dev, 0); + clk_disable(pdata->clk); + } + + return 0; +} + +static int xgene_rtc_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct xgene_rtc_dev *pdata = platform_get_drvdata(pdev); + int irq; + + irq = platform_get_irq(pdev, 0); + if (device_may_wakeup(&pdev->dev)) { + if (pdata->irq_wake) { + disable_irq_wake(irq); + pdata->irq_wake = 0; + } + } else { + clk_enable(pdata->clk); + xgene_rtc_alarm_irq_enable(dev, 1); + } + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(xgene_rtc_pm_ops, xgene_rtc_suspend, xgene_rtc_resume); + +#ifdef CONFIG_OF +static const struct of_device_id xgene_rtc_of_match[] = { + {.compatible = "apm,xgene-rtc" }, + { } +}; +MODULE_DEVICE_TABLE(of, xgene_rtc_of_match); +#endif + +static struct platform_driver xgene_rtc_driver = { + .probe = xgene_rtc_probe, + .remove = xgene_rtc_remove, + .driver = { + .owner = THIS_MODULE, + .name = "xgene-rtc", + .pm = &xgene_rtc_pm_ops, + .of_match_table = of_match_ptr(xgene_rtc_of_match), + }, +}; + +module_platform_driver(xgene_rtc_driver); + +MODULE_DESCRIPTION("APM X-Gene SoC RTC driver"); +MODULE_AUTHOR("Rameshwar Sahu "); +MODULE_LICENSE("GPL"); -- cgit v1.2.3 From 652ba66634e96edcebe549e96094d894ccdec707 Mon Sep 17 00:00:00 2001 From: Loc Ho Date: Fri, 6 Jun 2014 14:35:43 -0700 Subject: arm64: add APM X-Gene SoC RTC DTS entry This patch adds APM X-Gene SoC RTC DTS entry Signed-off-by: Rameshwar Prasad Sahu Signed-off-by: Loc Ho Cc: Jon Masters Cc: Alessandro Zummo Cc: Catalin Marinas Cc: Will Deacon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arm64/boot/dts/apm-storm.dtsi | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/arch/arm64/boot/dts/apm-storm.dtsi b/arch/arm64/boot/dts/apm-storm.dtsi index f8c40a66e65d..c5f0a47a1375 100644 --- a/arch/arm64/boot/dts/apm-storm.dtsi +++ b/arch/arm64/boot/dts/apm-storm.dtsi @@ -257,6 +257,19 @@ enable-offset = <0x0>; enable-mask = <0x39>; }; + + rtcclk: rtcclk@17000000 { + compatible = "apm,xgene-device-clock"; + #clock-cells = <1>; + clocks = <&socplldiv2 0>; + reg = <0x0 0x17000000 0x0 0x2000>; + reg-names = "csr-reg"; + csr-offset = <0xc>; + csr-mask = <0x2>; + enable-offset = <0x10>; + enable-mask = <0x2>; + clock-output-names = "rtcclk"; + }; }; serial0: serial@1c020000 { @@ -342,5 +355,13 @@ phys = <&phy3 0>; phy-names = "sata-phy"; }; + + rtc: rtc@10510000 { + compatible = "apm,xgene-rtc"; + reg = <0x0 0x10510000 0x0 0x400>; + interrupts = <0x0 0x46 0x4>; + #clock-cells = <1>; + clocks = <&rtcclk 0>; + }; }; }; -- cgit v1.2.3 From 5028578595e761a3e418092e04db2ebf6c752a3f Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Fri, 6 Jun 2014 14:35:44 -0700 Subject: drivers/rtc/rtc-m41t80.c: remove DRV_VERSION macro History is in git, no need for sperate versioning. Also remove the success printout, RTC core does it, too. Signed-off-by: Wolfram Sang Cc: Jingoo Han Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-m41t80.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c index a5248aa1abf1..c287c6d5d1a9 100644 --- a/drivers/rtc/rtc-m41t80.c +++ b/drivers/rtc/rtc-m41t80.c @@ -66,8 +66,6 @@ #define M41T80_FEATURE_WD (1 << 3) /* Extra watchdog resolution */ #define M41T80_FEATURE_SQ_ALT (1 << 4) /* RSx bits are in reg 4 */ -#define DRV_VERSION "0.05" - static DEFINE_MUTEX(m41t80_rtc_mutex); static const struct i2c_device_id m41t80_id[] = { { "m41t62", M41T80_FEATURE_SQ | M41T80_FEATURE_SQ_ALT }, @@ -634,9 +632,6 @@ static int m41t80_probe(struct i2c_client *client, goto exit; } - dev_info(&client->dev, - "chip found, driver version " DRV_VERSION "\n"); - clientdata = devm_kzalloc(&client->dev, sizeof(*clientdata), GFP_KERNEL); if (!clientdata) { @@ -750,4 +745,3 @@ module_i2c_driver(m41t80_driver); MODULE_AUTHOR("Alexander Bigga "); MODULE_DESCRIPTION("ST Microelectronics M41T80 series RTC I2C Client Driver"); MODULE_LICENSE("GPL"); -MODULE_VERSION(DRV_VERSION); -- cgit v1.2.3 From c67fedfab2d29de88a62282e0633d43329552703 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Fri, 6 Jun 2014 14:35:45 -0700 Subject: drivers/rtc/rtc-m41t80.c: clean up error paths There is no cleanup needed when something fails in probe, so no need for goto. Directly return when something fails. Signed-off-by: Wolfram Sang Cc: Jingoo Han Acked-by: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-m41t80.c | 64 +++++++++++++++++------------------------------- 1 file changed, 23 insertions(+), 41 deletions(-) diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c index c287c6d5d1a9..86eccb15f524 100644 --- a/drivers/rtc/rtc-m41t80.c +++ b/drivers/rtc/rtc-m41t80.c @@ -627,37 +627,28 @@ static int m41t80_probe(struct i2c_client *client, struct m41t80_data *clientdata = NULL; if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C - | I2C_FUNC_SMBUS_BYTE_DATA)) { - rc = -ENODEV; - goto exit; - } + | I2C_FUNC_SMBUS_BYTE_DATA)) + return -ENODEV; clientdata = devm_kzalloc(&client->dev, sizeof(*clientdata), GFP_KERNEL); - if (!clientdata) { - rc = -ENOMEM; - goto exit; - } + if (!clientdata) + return -ENOMEM; clientdata->features = id->driver_data; i2c_set_clientdata(client, clientdata); rtc = devm_rtc_device_register(&client->dev, client->name, &m41t80_rtc_ops, THIS_MODULE); - if (IS_ERR(rtc)) { - rc = PTR_ERR(rtc); - rtc = NULL; - goto exit; - } + if (IS_ERR(rtc)) + return PTR_ERR(rtc); clientdata->rtc = rtc; /* Make sure HT (Halt Update) bit is cleared */ rc = i2c_smbus_read_byte_data(client, M41T80_REG_ALARM_HOUR); - if (rc < 0) - goto ht_err; - if (rc & M41T80_ALHOUR_HT) { + if (rc >= 0 && rc & M41T80_ALHOUR_HT) { if (clientdata->features & M41T80_FEATURE_HT) { m41t80_get_datetime(client, &tm); dev_info(&client->dev, "HT bit was set!\n"); @@ -668,53 +659,44 @@ static int m41t80_probe(struct i2c_client *client, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); } - if (i2c_smbus_write_byte_data(client, - M41T80_REG_ALARM_HOUR, - rc & ~M41T80_ALHOUR_HT) < 0) - goto ht_err; + rc = i2c_smbus_write_byte_data(client, M41T80_REG_ALARM_HOUR, + rc & ~M41T80_ALHOUR_HT); + } + + if (rc < 0) { + dev_err(&client->dev, "Can't clear HT bit\n"); + return -EIO; } /* Make sure ST (stop) bit is cleared */ rc = i2c_smbus_read_byte_data(client, M41T80_REG_SEC); - if (rc < 0) - goto st_err; - if (rc & M41T80_SEC_ST) { - if (i2c_smbus_write_byte_data(client, M41T80_REG_SEC, - rc & ~M41T80_SEC_ST) < 0) - goto st_err; + if (rc >= 0 && rc & M41T80_SEC_ST) + rc = i2c_smbus_write_byte_data(client, M41T80_REG_SEC, + rc & ~M41T80_SEC_ST); + if (rc < 0) { + dev_err(&client->dev, "Can't clear ST bit\n"); + return -EIO; } rc = m41t80_sysfs_register(&client->dev); if (rc) - goto exit; + return rc; #ifdef CONFIG_RTC_DRV_M41T80_WDT if (clientdata->features & M41T80_FEATURE_HT) { save_client = client; rc = misc_register(&wdt_dev); if (rc) - goto exit; + return rc; rc = register_reboot_notifier(&wdt_notifier); if (rc) { misc_deregister(&wdt_dev); - goto exit; + return rc; } } #endif return 0; - -st_err: - rc = -EIO; - dev_err(&client->dev, "Can't clear ST bit\n"); - goto exit; -ht_err: - rc = -EIO; - dev_err(&client->dev, "Can't clear HT bit\n"); - goto exit; - -exit: - return rc; } static int m41t80_remove(struct i2c_client *client) -- cgit v1.2.3 From 85d77047c4eaa247bc19a581dba968571dd87e55 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Fri, 6 Jun 2014 14:35:46 -0700 Subject: drivers/rtc/rtc-m41t80.c: propagate error value from smbus functions Don't replace the value we got from the I2C layer, just pass it on. Signed-off-by: Wolfram Sang Cc: Jingoo Han Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-m41t80.c | 37 +++++++++++++++++++++++-------------- 1 file changed, 23 insertions(+), 14 deletions(-) diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c index 86eccb15f524..d348b23ce18b 100644 --- a/drivers/rtc/rtc-m41t80.c +++ b/drivers/rtc/rtc-m41t80.c @@ -230,7 +230,7 @@ static ssize_t m41t80_sysfs_show_flags(struct device *dev, val = i2c_smbus_read_byte_data(client, M41T80_REG_FLAGS); if (val < 0) - return -EIO; + return val; return sprintf(buf, "%#x\n", val); } static DEVICE_ATTR(flags, S_IRUGO, m41t80_sysfs_show_flags, NULL); @@ -250,7 +250,7 @@ static ssize_t m41t80_sysfs_show_sqwfreq(struct device *dev, reg_sqw = M41T80_REG_WDAY; val = i2c_smbus_read_byte_data(client, reg_sqw); if (val < 0) - return -EIO; + return val; val = (val >> 4) & 0xf; switch (val) { case 0: @@ -269,7 +269,7 @@ static ssize_t m41t80_sysfs_set_sqwfreq(struct device *dev, { struct i2c_client *client = to_i2c_client(dev); struct m41t80_data *clientdata = i2c_get_clientdata(client); - int almon, sqw, reg_sqw; + int almon, sqw, reg_sqw, rc; int val = simple_strtoul(buf, NULL, 0); if (!(clientdata->features & M41T80_FEATURE_SQ)) @@ -289,21 +289,30 @@ static ssize_t m41t80_sysfs_set_sqwfreq(struct device *dev, /* disable SQW, set SQW frequency & re-enable */ almon = i2c_smbus_read_byte_data(client, M41T80_REG_ALARM_MON); if (almon < 0) - return -EIO; + return almon; reg_sqw = M41T80_REG_SQW; if (clientdata->features & M41T80_FEATURE_SQ_ALT) reg_sqw = M41T80_REG_WDAY; sqw = i2c_smbus_read_byte_data(client, reg_sqw); if (sqw < 0) - return -EIO; + return sqw; sqw = (sqw & 0x0f) | (val << 4); - if (i2c_smbus_write_byte_data(client, M41T80_REG_ALARM_MON, - almon & ~M41T80_ALMON_SQWE) < 0 || - i2c_smbus_write_byte_data(client, reg_sqw, sqw) < 0) - return -EIO; - if (val && i2c_smbus_write_byte_data(client, M41T80_REG_ALARM_MON, - almon | M41T80_ALMON_SQWE) < 0) - return -EIO; + + rc = i2c_smbus_write_byte_data(client, M41T80_REG_ALARM_MON, + almon & ~M41T80_ALMON_SQWE); + if (rc < 0) + return rc; + + if (val) { + rc = i2c_smbus_write_byte_data(client, reg_sqw, sqw); + if (rc < 0) + return rc; + + rc = i2c_smbus_write_byte_data(client, M41T80_REG_ALARM_MON, + almon | M41T80_ALMON_SQWE); + if (rc <0) + return rc; + } return count; } static DEVICE_ATTR(sqwfreq, S_IRUGO | S_IWUSR, @@ -665,7 +674,7 @@ static int m41t80_probe(struct i2c_client *client, if (rc < 0) { dev_err(&client->dev, "Can't clear HT bit\n"); - return -EIO; + return rc; } /* Make sure ST (stop) bit is cleared */ @@ -676,7 +685,7 @@ static int m41t80_probe(struct i2c_client *client, rc & ~M41T80_SEC_ST); if (rc < 0) { dev_err(&client->dev, "Can't clear ST bit\n"); - return -EIO; + return rc; } rc = m41t80_sysfs_register(&client->dev); -- cgit v1.2.3 From 6b1a5235498d6002d40cb0503365154e49c53122 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Fri, 6 Jun 2014 14:35:47 -0700 Subject: drivers/rtc/rtc-m41t80.c: add support for MicroCrystal rv4162 Signed-off-by: Wolfram Sang Cc: Jingoo Han Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/Kconfig | 4 ++-- drivers/rtc/rtc-m41t80.c | 1 + 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index ac4fa56280cd..f4e113874e7a 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -386,12 +386,12 @@ config RTC_DRV_PCF8583 will be called rtc-pcf8583. config RTC_DRV_M41T80 - tristate "ST M41T62/65/M41T80/81/82/83/84/85/87" + tristate "ST M41T62/65/M41T80/81/82/83/84/85/87 and compatible" help If you say Y here you will get support for the ST M41T60 and M41T80 RTC chips series. Currently, the following chips are supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84, - M41ST85, and M41ST87. + M41ST85, M41ST87, and MicroCrystal RV4162. This driver can also be built as a module. If so, the module will be called rtc-m41t80. diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c index d348b23ce18b..7ff7427c2e6a 100644 --- a/drivers/rtc/rtc-m41t80.c +++ b/drivers/rtc/rtc-m41t80.c @@ -78,6 +78,7 @@ static const struct i2c_device_id m41t80_id[] = { { "m41st84", M41T80_FEATURE_HT | M41T80_FEATURE_BL | M41T80_FEATURE_SQ }, { "m41st85", M41T80_FEATURE_HT | M41T80_FEATURE_BL | M41T80_FEATURE_SQ }, { "m41st87", M41T80_FEATURE_HT | M41T80_FEATURE_BL | M41T80_FEATURE_SQ }, + { "rv4162", M41T80_FEATURE_SQ | M41T80_FEATURE_WD | M41T80_FEATURE_SQ_ALT }, { } }; MODULE_DEVICE_TABLE(i2c, m41t80_id); -- cgit v1.2.3 From 809d9627087e1db63b8672c1f264af73b13116fb Mon Sep 17 00:00:00 2001 From: "Lee, Chun-Yi" Date: Fri, 6 Jun 2014 14:35:48 -0700 Subject: drivers/rtc/rtc-efi.c: avoid subtracting day twice when computing year days Compared source code of rtc-lib.c::rtc_year_days() with efirtc.c::rtc_year_days(), found the code in rtc-efi decreases value of day twice when it computing year days. rtc-lib.c::rtc_year_days() has already decrease days and return the year days from 0 to 365. Signed-off-by: Lee, Chun-Yi Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-efi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-efi.c b/drivers/rtc/rtc-efi.c index 797aa0252ba9..c4c38431012e 100644 --- a/drivers/rtc/rtc-efi.c +++ b/drivers/rtc/rtc-efi.c @@ -35,7 +35,7 @@ static inline int compute_yday(efi_time_t *eft) { /* efi_time_t.month is in the [1-12] so, we need -1 */ - return rtc_year_days(eft->day - 1, eft->month - 1, eft->year); + return rtc_year_days(eft->day, eft->month - 1, eft->year); } /* * returns day of the week [0-6] 0=Sunday -- cgit v1.2.3 From 31632dbdba85aafc8a6772d578c5c14f84a1fe17 Mon Sep 17 00:00:00 2001 From: "Maciej W. Rozycki" Date: Fri, 6 Jun 2014 14:35:49 -0700 Subject: drivers/rtc/rtc-cmos.c: drivers/char/rtc.c features for DECstation support This brings in drivers/char/rtc.c functionality required for DECstation and, should the maintainers decide to switch, Alpha systems to use rtc-cmos. Specifically these features are made available: * RTC iomem rather than x86/PCI port I/O mapping, controlled with the RTC_IOMAPPED macro as with the original driver. The DS1287A chip in all DECstation systems is mapped in the host bus address space as a contiguous block of 64 32-bit words of which the least significant byte accesses the RTC chip for both reads and writes. All the address and data window register accesses are made transparently by the chipset glue logic so that the device appears directly mapped on the host bus. * A way to set the size of the address space explicitly with the newly-added `address_space' member of the platform part of the RTC device structure. This avoids the unreliable heuristics that does not work in a setup where the RTC is not explicitly accessed with the usual address and data window register pair. * The ability to use the RTC periodic interrupt as a system clock device, which is implemented by arch/mips/kernel/cevt-ds1287.c for DECstation systems and takes the RTC interrupt away from the RTC driver. Eventually hooking back to the clock device's interrupt handler should be possible for the purpose of the alarm clock and possibly also update-in-progress interrupt, but this is not done by this change. o To avoid interfering with the clock interrupt all the places where the RTC interrupt mask is fiddled with are only executed if and IRQ has been assigned to the RTC driver. o To avoid changing the clock setup Register A is not fiddled with if CMOS_RTC_FLAGS_NOFREQ is set in the newly-added `flags' member of the platform part of the RTC device structure. Originally, in drivers/char/rtc.c, this was keyed with the absence of the RTC interrupt, just like the interrupt mask, but there only the periodic interrupt frequency is set, whereas rtc-cmos also sets the divider bits. Therefore a new flag is introduced so that systems where the RTC interrupt is not usable rather than used as a system clock device can fully initialise the RTC. * A small clean-up is made to the IRQ assignment code that makes the IRQ number hardcoded to -1 rather than arbitrary -ENXIO (or whatever error happens to be returned by platform_get_irq) where no IRQ has been assigned to the RTC driver (NO_IRQ might be another candidate, but it looks like this macro has inconsistent or missing definitions and limited use and might therefore be unsafe). Verified to work correctly with a DECstation 5000/240 system. [akpm@linux-foundation.org: fix weird code layout] Signed-off-by: Maciej W. Rozycki Cc: Alessandro Zummo Cc: Ralf Baechle Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-cmos.c | 85 ++++++++++++++++++++++++++++++++------------- include/linux/mc146818rtc.h | 4 +++ 2 files changed, 64 insertions(+), 25 deletions(-) diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c index 0963c9309c74..b0e4a3eb33c7 100644 --- a/drivers/rtc/rtc-cmos.c +++ b/drivers/rtc/rtc-cmos.c @@ -647,6 +647,7 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq) int retval = 0; unsigned char rtc_control; unsigned address_space; + u32 flags = 0; /* there can be only one ... */ if (cmos_rtc.dev) @@ -660,9 +661,12 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq) * REVISIT non-x86 systems may instead use memory space resources * (needing ioremap etc), not i/o space resources like this ... */ - ports = request_region(ports->start, - resource_size(ports), - driver_name); + if (RTC_IOMAPPED) + ports = request_region(ports->start, resource_size(ports), + driver_name); + else + ports = request_mem_region(ports->start, resource_size(ports), + driver_name); if (!ports) { dev_dbg(dev, "i/o registers already in use\n"); return -EBUSY; @@ -699,6 +703,11 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq) * expect CMOS_READ and friends to handle. */ if (info) { + if (info->flags) + flags = info->flags; + if (info->address_space) + address_space = info->address_space; + if (info->rtc_day_alarm && info->rtc_day_alarm < 128) cmos_rtc.day_alrm = info->rtc_day_alarm; if (info->rtc_mon_alarm && info->rtc_mon_alarm < 128) @@ -726,18 +735,21 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq) spin_lock_irq(&rtc_lock); - /* force periodic irq to CMOS reset default of 1024Hz; - * - * REVISIT it's been reported that at least one x86_64 ALI mobo - * doesn't use 32KHz here ... for portability we might need to - * do something about other clock frequencies. - */ - cmos_rtc.rtc->irq_freq = 1024; - hpet_set_periodic_freq(cmos_rtc.rtc->irq_freq); - CMOS_WRITE(RTC_REF_CLCK_32KHZ | 0x06, RTC_FREQ_SELECT); + if (!(flags & CMOS_RTC_FLAGS_NOFREQ)) { + /* force periodic irq to CMOS reset default of 1024Hz; + * + * REVISIT it's been reported that at least one x86_64 ALI + * mobo doesn't use 32KHz here ... for portability we might + * need to do something about other clock frequencies. + */ + cmos_rtc.rtc->irq_freq = 1024; + hpet_set_periodic_freq(cmos_rtc.rtc->irq_freq); + CMOS_WRITE(RTC_REF_CLCK_32KHZ | 0x06, RTC_FREQ_SELECT); + } /* disable irqs */ - cmos_irq_disable(&cmos_rtc, RTC_PIE | RTC_AIE | RTC_UIE); + if (is_valid_irq(rtc_irq)) + cmos_irq_disable(&cmos_rtc, RTC_PIE | RTC_AIE | RTC_UIE); rtc_control = CMOS_READ(RTC_CONTROL); @@ -802,14 +814,18 @@ cleanup1: cmos_rtc.dev = NULL; rtc_device_unregister(cmos_rtc.rtc); cleanup0: - release_region(ports->start, resource_size(ports)); + if (RTC_IOMAPPED) + release_region(ports->start, resource_size(ports)); + else + release_mem_region(ports->start, resource_size(ports)); return retval; } -static void cmos_do_shutdown(void) +static void cmos_do_shutdown(int rtc_irq) { spin_lock_irq(&rtc_lock); - cmos_irq_disable(&cmos_rtc, RTC_IRQMASK); + if (is_valid_irq(rtc_irq)) + cmos_irq_disable(&cmos_rtc, RTC_IRQMASK); spin_unlock_irq(&rtc_lock); } @@ -818,7 +834,7 @@ static void __exit cmos_do_remove(struct device *dev) struct cmos_rtc *cmos = dev_get_drvdata(dev); struct resource *ports; - cmos_do_shutdown(); + cmos_do_shutdown(cmos->irq); sysfs_remove_bin_file(&dev->kobj, &nvram); @@ -831,7 +847,10 @@ static void __exit cmos_do_remove(struct device *dev) cmos->rtc = NULL; ports = cmos->iomem; - release_region(ports->start, resource_size(ports)); + if (RTC_IOMAPPED) + release_region(ports->start, resource_size(ports)); + else + release_mem_region(ports->start, resource_size(ports)); cmos->iomem = NULL; cmos->dev = NULL; @@ -1065,10 +1084,13 @@ static void __exit cmos_pnp_remove(struct pnp_dev *pnp) static void cmos_pnp_shutdown(struct pnp_dev *pnp) { - if (system_state == SYSTEM_POWER_OFF && !cmos_poweroff(&pnp->dev)) + struct device *dev = &pnp->dev; + struct cmos_rtc *cmos = dev_get_drvdata(dev); + + if (system_state == SYSTEM_POWER_OFF && !cmos_poweroff(dev)) return; - cmos_do_shutdown(); + cmos_do_shutdown(cmos->irq); } static const struct pnp_device_id rtc_ids[] = { @@ -1143,11 +1165,21 @@ static inline void cmos_of_init(struct platform_device *pdev) {} static int __init cmos_platform_probe(struct platform_device *pdev) { + struct resource *resource; + int irq; + cmos_of_init(pdev); cmos_wake_setup(&pdev->dev); - return cmos_do_probe(&pdev->dev, - platform_get_resource(pdev, IORESOURCE_IO, 0), - platform_get_irq(pdev, 0)); + + if (RTC_IOMAPPED) + resource = platform_get_resource(pdev, IORESOURCE_IO, 0); + else + resource = platform_get_resource(pdev, IORESOURCE_MEM, 0); + irq = platform_get_irq(pdev, 0); + if (irq < 0) + irq = -1; + + return cmos_do_probe(&pdev->dev, resource, irq); } static int __exit cmos_platform_remove(struct platform_device *pdev) @@ -1158,10 +1190,13 @@ static int __exit cmos_platform_remove(struct platform_device *pdev) static void cmos_platform_shutdown(struct platform_device *pdev) { - if (system_state == SYSTEM_POWER_OFF && !cmos_poweroff(&pdev->dev)) + struct device *dev = &pdev->dev; + struct cmos_rtc *cmos = dev_get_drvdata(dev); + + if (system_state == SYSTEM_POWER_OFF && !cmos_poweroff(dev)) return; - cmos_do_shutdown(); + cmos_do_shutdown(cmos->irq); } /* work with hotplug and coldplug */ diff --git a/include/linux/mc146818rtc.h b/include/linux/mc146818rtc.h index 2f4e957af656..433e0c74d643 100644 --- a/include/linux/mc146818rtc.h +++ b/include/linux/mc146818rtc.h @@ -31,6 +31,10 @@ struct cmos_rtc_board_info { void (*wake_on)(struct device *dev); void (*wake_off)(struct device *dev); + u32 flags; +#define CMOS_RTC_FLAGS_NOFREQ (1 << 0) + int address_space; + u8 rtc_day_alarm; /* zero, or register index */ u8 rtc_mon_alarm; /* zero, or register index */ u8 rtc_century; /* zero, or register index */ -- cgit v1.2.3 From fae67ad431146d2584dd813cbc198400a477aa53 Mon Sep 17 00:00:00 2001 From: "Maciej W. Rozycki" Date: Fri, 6 Jun 2014 14:35:50 -0700 Subject: arch/mips/dec: switch DECstation systems to rtc-cmos This adds an RTC platform device for DECstation systems so that they can use the rtc-cmos driver for their RTC device. Signed-off-by: Maciej W. Rozycki Cc: Alessandro Zummo Cc: Ralf Baechle Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/mips/dec/Makefile | 2 +- arch/mips/dec/platform.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 45 insertions(+), 1 deletion(-) create mode 100644 arch/mips/dec/platform.c diff --git a/arch/mips/dec/Makefile b/arch/mips/dec/Makefile index 3d5d2c56de8d..bd74e05c90b0 100644 --- a/arch/mips/dec/Makefile +++ b/arch/mips/dec/Makefile @@ -3,7 +3,7 @@ # obj-y := ecc-berr.o int-handler.o ioasic-irq.o kn01-berr.o \ - kn02-irq.o kn02xa-berr.o reset.o setup.o time.o + kn02-irq.o kn02xa-berr.o platform.o reset.o setup.o time.o obj-$(CONFIG_TC) += tc.o obj-$(CONFIG_CPU_HAS_WB) += wbflush.o diff --git a/arch/mips/dec/platform.c b/arch/mips/dec/platform.c new file mode 100644 index 000000000000..c7ac86af847a --- /dev/null +++ b/arch/mips/dec/platform.c @@ -0,0 +1,44 @@ +/* + * DEC platform devices. + * + * Copyright (c) 2014 Maciej W. Rozycki + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include +#include +#include +#include + +static struct resource dec_rtc_resources[] = { + { + .name = "rtc", + .flags = IORESOURCE_MEM, + }, +}; + +static struct cmos_rtc_board_info dec_rtc_info = { + .flags = CMOS_RTC_FLAGS_NOFREQ, + .address_space = 64, +}; + +static struct platform_device dec_rtc_device = { + .name = "rtc_cmos", + .id = PLATFORM_DEVID_NONE, + .dev.platform_data = &dec_rtc_info, + .resource = dec_rtc_resources, + .num_resources = ARRAY_SIZE(dec_rtc_resources), +}; + +static int __init dec_add_devices(void) +{ + dec_rtc_resources[0].start = RTC_PORT(0); + dec_rtc_resources[0].end = RTC_PORT(0) + dec_kn_slot_size - 1; + return platform_device_register(&dec_rtc_device); +} + +device_initcall(dec_add_devices); -- cgit v1.2.3 From e66040cbd21fd731e818ef9261a893cb1ae5c90f Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Fri, 6 Jun 2014 14:35:51 -0700 Subject: drivers/rtc/rtc-88pm860x.c: use of_get_child_by_name() Use of_get_child_by_name() to obtain reference to charger node instead of of_find_node_by_name() which can walk outside of the parent node. Signed-off-by: Krzysztof Kozlowski Acked-by: Jingoo Han Cc: Haojian Zhuang Cc: Sachin Kamat Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-88pm860x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-88pm860x.c b/drivers/rtc/rtc-88pm860x.c index 816504846cdd..fb9e3c63b4ac 100644 --- a/drivers/rtc/rtc-88pm860x.c +++ b/drivers/rtc/rtc-88pm860x.c @@ -293,7 +293,7 @@ static int pm860x_rtc_dt_init(struct platform_device *pdev, int ret; if (!np) return -ENODEV; - np = of_find_node_by_name(np, "rtc"); + np = of_get_child_by_name(np, "rtc"); if (!np) { dev_err(&pdev->dev, "failed to find rtc node\n"); return -ENODEV; -- cgit v1.2.3 From 1e83d48b5e84e4c71a073e35ea4e2e6d0a1bdaac Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Fri, 6 Jun 2014 14:35:52 -0700 Subject: drivers/rtc/rtc-88pm860x.c: add missing of_node_put() Add missing of_node_put() to decrement the reference count. Signed-off-by: Krzysztof Kozlowski Acked-by: Jingoo Han Cc: Haojian Zhuang Cc: Sachin Kamat Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-88pm860x.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/rtc/rtc-88pm860x.c b/drivers/rtc/rtc-88pm860x.c index fb9e3c63b4ac..0c6add1a38dc 100644 --- a/drivers/rtc/rtc-88pm860x.c +++ b/drivers/rtc/rtc-88pm860x.c @@ -301,6 +301,7 @@ static int pm860x_rtc_dt_init(struct platform_device *pdev, ret = of_property_read_u32(np, "marvell,88pm860x-vrtc", &info->vrtc); if (ret) info->vrtc = 0; + of_node_put(np); return 0; } #else -- cgit v1.2.3 From 7c994c08c376eb96503dc6a7110fda95e24dbdb1 Mon Sep 17 00:00:00 2001 From: Anthony Olech Date: Fri, 6 Jun 2014 14:35:54 -0700 Subject: drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech Cc: David Dajun Chen Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-da9052.c | 122 +++++++++++++++++++++++++---------------------- 1 file changed, 66 insertions(+), 56 deletions(-) diff --git a/drivers/rtc/rtc-da9052.c b/drivers/rtc/rtc-da9052.c index a1cbf64242a5..e5c9486cf452 100644 --- a/drivers/rtc/rtc-da9052.c +++ b/drivers/rtc/rtc-da9052.c @@ -20,28 +20,28 @@ #include #include -#define rtc_err(da9052, fmt, ...) \ - dev_err(da9052->dev, "%s: " fmt, __func__, ##__VA_ARGS__) +#define rtc_err(rtc, fmt, ...) \ + dev_err(rtc->da9052->dev, "%s: " fmt, __func__, ##__VA_ARGS__) struct da9052_rtc { struct rtc_device *rtc; struct da9052 *da9052; }; -static int da9052_rtc_enable_alarm(struct da9052 *da9052, bool enable) +static int da9052_rtc_enable_alarm(struct da9052_rtc *rtc, bool enable) { int ret; if (enable) { - ret = da9052_reg_update(da9052, DA9052_ALARM_Y_REG, - DA9052_ALARM_Y_ALARM_ON, - DA9052_ALARM_Y_ALARM_ON); + ret = da9052_reg_update(rtc->da9052, DA9052_ALARM_Y_REG, + DA9052_ALARM_Y_ALARM_ON|DA9052_ALARM_Y_TICK_ON, + DA9052_ALARM_Y_ALARM_ON); if (ret != 0) - rtc_err(da9052, "Failed to enable ALM: %d\n", ret); + rtc_err(rtc, "Failed to enable ALM: %d\n", ret); } else { - ret = da9052_reg_update(da9052, DA9052_ALARM_Y_REG, - DA9052_ALARM_Y_ALARM_ON, 0); + ret = da9052_reg_update(rtc->da9052, DA9052_ALARM_Y_REG, + DA9052_ALARM_Y_ALARM_ON|DA9052_ALARM_Y_TICK_ON, 0); if (ret != 0) - rtc_err(da9052, "Write error: %d\n", ret); + rtc_err(rtc, "Write error: %d\n", ret); } return ret; } @@ -49,31 +49,20 @@ static int da9052_rtc_enable_alarm(struct da9052 *da9052, bool enable) static irqreturn_t da9052_rtc_irq(int irq, void *data) { struct da9052_rtc *rtc = data; - int ret; - ret = da9052_reg_read(rtc->da9052, DA9052_ALARM_MI_REG); - if (ret < 0) { - rtc_err(rtc->da9052, "Read error: %d\n", ret); - return IRQ_NONE; - } - - if (ret & DA9052_ALARMMI_ALARMTYPE) { - da9052_rtc_enable_alarm(rtc->da9052, 0); - rtc_update_irq(rtc->rtc, 1, RTC_IRQF | RTC_AF); - } else - rtc_update_irq(rtc->rtc, 1, RTC_IRQF | RTC_PF); + rtc_update_irq(rtc->rtc, 1, RTC_IRQF | RTC_AF); return IRQ_HANDLED; } -static int da9052_read_alarm(struct da9052 *da9052, struct rtc_time *rtc_tm) +static int da9052_read_alarm(struct da9052_rtc *rtc, struct rtc_time *rtc_tm) { int ret; uint8_t v[5]; - ret = da9052_group_read(da9052, DA9052_ALARM_MI_REG, 5, v); + ret = da9052_group_read(rtc->da9052, DA9052_ALARM_MI_REG, 5, v); if (ret != 0) { - rtc_err(da9052, "Failed to group read ALM: %d\n", ret); + rtc_err(rtc, "Failed to group read ALM: %d\n", ret); return ret; } @@ -84,23 +73,33 @@ static int da9052_read_alarm(struct da9052 *da9052, struct rtc_time *rtc_tm) rtc_tm->tm_min = v[0] & DA9052_RTC_MIN; ret = rtc_valid_tm(rtc_tm); - if (ret != 0) - return ret; return ret; } -static int da9052_set_alarm(struct da9052 *da9052, struct rtc_time *rtc_tm) +static int da9052_set_alarm(struct da9052_rtc *rtc, struct rtc_time *rtc_tm) { + struct da9052 *da9052 = rtc->da9052; + unsigned long alm_time; int ret; uint8_t v[3]; + ret = rtc_tm_to_time(rtc_tm, &alm_time); + if (ret != 0) + return ret; + + if (rtc_tm->tm_sec > 0) { + alm_time += 60 - rtc_tm->tm_sec; + rtc_time_to_tm(alm_time, rtc_tm); + } + BUG_ON(rtc_tm->tm_sec); /* it will cause repeated irqs if not zero */ + rtc_tm->tm_year -= 100; rtc_tm->tm_mon += 1; ret = da9052_reg_update(da9052, DA9052_ALARM_MI_REG, DA9052_RTC_MIN, rtc_tm->tm_min); if (ret != 0) { - rtc_err(da9052, "Failed to write ALRM MIN: %d\n", ret); + rtc_err(rtc, "Failed to write ALRM MIN: %d\n", ret); return ret; } @@ -115,22 +114,22 @@ static int da9052_set_alarm(struct da9052 *da9052, struct rtc_time *rtc_tm) ret = da9052_reg_update(da9052, DA9052_ALARM_Y_REG, DA9052_RTC_YEAR, rtc_tm->tm_year); if (ret != 0) - rtc_err(da9052, "Failed to write ALRM YEAR: %d\n", ret); + rtc_err(rtc, "Failed to write ALRM YEAR: %d\n", ret); return ret; } -static int da9052_rtc_get_alarm_status(struct da9052 *da9052) +static int da9052_rtc_get_alarm_status(struct da9052_rtc *rtc) { int ret; - ret = da9052_reg_read(da9052, DA9052_ALARM_Y_REG); + ret = da9052_reg_read(rtc->da9052, DA9052_ALARM_Y_REG); if (ret < 0) { - rtc_err(da9052, "Failed to read ALM: %d\n", ret); + rtc_err(rtc, "Failed to read ALM: %d\n", ret); return ret; } - ret &= DA9052_ALARM_Y_ALARM_ON; - return (ret > 0) ? 1 : 0; + + return !!(ret&DA9052_ALARM_Y_ALARM_ON); } static int da9052_rtc_read_time(struct device *dev, struct rtc_time *rtc_tm) @@ -141,7 +140,7 @@ static int da9052_rtc_read_time(struct device *dev, struct rtc_time *rtc_tm) ret = da9052_group_read(rtc->da9052, DA9052_COUNT_S_REG, 6, v); if (ret < 0) { - rtc_err(rtc->da9052, "Failed to read RTC time : %d\n", ret); + rtc_err(rtc, "Failed to read RTC time : %d\n", ret); return ret; } @@ -153,18 +152,14 @@ static int da9052_rtc_read_time(struct device *dev, struct rtc_time *rtc_tm) rtc_tm->tm_sec = v[0] & DA9052_RTC_SEC; ret = rtc_valid_tm(rtc_tm); - if (ret != 0) { - rtc_err(rtc->da9052, "rtc_valid_tm failed: %d\n", ret); - return ret; - } - - return 0; + return ret; } static int da9052_rtc_set_time(struct device *dev, struct rtc_time *tm) { struct da9052_rtc *rtc; uint8_t v[6]; + int ret; rtc = dev_get_drvdata(dev); @@ -175,7 +170,10 @@ static int da9052_rtc_set_time(struct device *dev, struct rtc_time *tm) v[4] = tm->tm_mon + 1; v[5] = tm->tm_year - 100; - return da9052_group_write(rtc->da9052, DA9052_COUNT_S_REG, 6, v); + ret = da9052_group_write(rtc->da9052, DA9052_COUNT_S_REG, 6, v); + if (ret < 0) + rtc_err(rtc, "failed to set RTC time: %d\n", ret); + return ret; } static int da9052_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) @@ -184,13 +182,13 @@ static int da9052_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) struct rtc_time *tm = &alrm->time; struct da9052_rtc *rtc = dev_get_drvdata(dev); - ret = da9052_read_alarm(rtc->da9052, tm); - - if (ret) + ret = da9052_read_alarm(rtc, tm); + if (ret < 0) { + rtc_err(rtc, "failed to read RTC alarm: %d\n", ret); return ret; + } - alrm->enabled = da9052_rtc_get_alarm_status(rtc->da9052); - + alrm->enabled = da9052_rtc_get_alarm_status(rtc); return 0; } @@ -200,16 +198,15 @@ static int da9052_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) struct rtc_time *tm = &alrm->time; struct da9052_rtc *rtc = dev_get_drvdata(dev); - ret = da9052_rtc_enable_alarm(rtc->da9052, 0); + ret = da9052_rtc_enable_alarm(rtc, 0); if (ret < 0) return ret; - ret = da9052_set_alarm(rtc->da9052, tm); - if (ret) + ret = da9052_set_alarm(rtc, tm); + if (ret < 0) return ret; - ret = da9052_rtc_enable_alarm(rtc->da9052, 1); - + ret = da9052_rtc_enable_alarm(rtc, 1); return ret; } @@ -217,7 +214,7 @@ static int da9052_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) { struct da9052_rtc *rtc = dev_get_drvdata(dev); - return da9052_rtc_enable_alarm(rtc->da9052, enabled); + return da9052_rtc_enable_alarm(rtc, enabled); } static const struct rtc_class_ops da9052_rtc_ops = { @@ -239,10 +236,23 @@ static int da9052_rtc_probe(struct platform_device *pdev) rtc->da9052 = dev_get_drvdata(pdev->dev.parent); platform_set_drvdata(pdev, rtc); + + ret = da9052_reg_write(rtc->da9052, DA9052_BBAT_CONT_REG, 0xFE); + if (ret < 0) { + rtc_err(rtc, + "Failed to setup RTC battery charging: %d\n", ret); + return ret; + } + + ret = da9052_reg_update(rtc->da9052, DA9052_ALARM_Y_REG, + DA9052_ALARM_Y_TICK_ON, 0); + if (ret != 0) + rtc_err(rtc, "Failed to disable TICKS: %d\n", ret); + ret = da9052_request_irq(rtc->da9052, DA9052_IRQ_ALARM, "ALM", da9052_rtc_irq, rtc); if (ret != 0) { - rtc_err(rtc->da9052, "irq registration failed: %d\n", ret); + rtc_err(rtc, "irq registration failed: %d\n", ret); return ret; } @@ -261,7 +271,7 @@ static struct platform_driver da9052_rtc_driver = { module_platform_driver(da9052_rtc_driver); -MODULE_AUTHOR("David Dajun Chen "); +MODULE_AUTHOR("Anthony Olech "); MODULE_DESCRIPTION("RTC driver for Dialog DA9052 PMIC"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:da9052-rtc"); -- cgit v1.2.3 From 9d203572f05011a4bb324268b283c17421c9a040 Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Fri, 6 Jun 2014 14:35:54 -0700 Subject: rtc: rtc-ds1742: make of_device_id array const Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-ds1742.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-ds1742.c b/drivers/rtc/rtc-ds1742.c index 942103dac30f..c6b2191a4128 100644 --- a/drivers/rtc/rtc-ds1742.c +++ b/drivers/rtc/rtc-ds1742.c @@ -219,7 +219,7 @@ static int ds1742_rtc_remove(struct platform_device *pdev) return 0; } -static struct of_device_id __maybe_unused ds1742_rtc_of_match[] = { +static const struct of_device_id __maybe_unused ds1742_rtc_of_match[] = { { .compatible = "maxim,ds1742", }, { } }; -- cgit v1.2.3 From e524360bff8627a7b07424814fe8eec7307c46a2 Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Fri, 6 Jun 2014 14:35:55 -0700 Subject: rtc: rtc-hym8563: make of_device_id array const Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han Acked-by: Heiko Stbner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-hym8563.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c index e5f13c4310fe..e3290abbb03e 100644 --- a/drivers/rtc/rtc-hym8563.c +++ b/drivers/rtc/rtc-hym8563.c @@ -585,7 +585,7 @@ static const struct i2c_device_id hym8563_id[] = { }; MODULE_DEVICE_TABLE(i2c, hym8563_id); -static struct of_device_id hym8563_dt_idtable[] = { +static const struct of_device_id hym8563_dt_idtable[] = { { .compatible = "haoyu,hym8563" }, {}, }; -- cgit v1.2.3 From 8c5bfac0ffd172f3d81be091050fca2aa544ed6e Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Fri, 6 Jun 2014 14:35:56 -0700 Subject: rtc: isl12057: make of_device_id array const Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-isl12057.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-isl12057.c b/drivers/rtc/rtc-isl12057.c index 41bd76aaff76..455b601d731d 100644 --- a/drivers/rtc/rtc-isl12057.c +++ b/drivers/rtc/rtc-isl12057.c @@ -278,7 +278,7 @@ static int isl12057_probe(struct i2c_client *client, } #ifdef CONFIG_OF -static struct of_device_id isl12057_dt_match[] = { +static const struct of_device_id isl12057_dt_match[] = { { .compatible = "isl,isl12057" }, { }, }; -- cgit v1.2.3 From 4621bc56ceea7a5addacfef4b757c04c97e9476a Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Fri, 6 Jun 2014 14:35:57 -0700 Subject: rtc: rtc-mv: make of_device_id array const Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-mv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-mv.c b/drivers/rtc/rtc-mv.c index d15a999363fc..6aaec2fc7c0d 100644 --- a/drivers/rtc/rtc-mv.c +++ b/drivers/rtc/rtc-mv.c @@ -319,7 +319,7 @@ static int __exit mv_rtc_remove(struct platform_device *pdev) } #ifdef CONFIG_OF -static struct of_device_id rtc_mv_of_match_table[] = { +static const struct of_device_id rtc_mv_of_match_table[] = { { .compatible = "marvell,orion-rtc", }, {} }; -- cgit v1.2.3 From 7abe3f5404fae84cecd851e140a2218ba9d24e4f Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Fri, 6 Jun 2014 14:35:58 -0700 Subject: rtc: rtc-palmas: make of_device_id array const Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-palmas.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-palmas.c b/drivers/rtc/rtc-palmas.c index c360d62fb3f6..4dfe2d793fa3 100644 --- a/drivers/rtc/rtc-palmas.c +++ b/drivers/rtc/rtc-palmas.c @@ -352,7 +352,7 @@ static SIMPLE_DEV_PM_OPS(palmas_rtc_pm_ops, palmas_rtc_suspend, palmas_rtc_resume); #ifdef CONFIG_OF -static struct of_device_id of_palmas_rtc_match[] = { +static const struct of_device_id of_palmas_rtc_match[] = { { .compatible = "ti,palmas-rtc"}, { }, }; -- cgit v1.2.3 From 1d6316f56d04a10f39621088f3b672a3c5528b80 Mon Sep 17 00:00:00 2001 From: Raghavendra Ganiga Date: Fri, 6 Jun 2014 14:35:59 -0700 Subject: drivers/rtc: add support for maxim dallas rtc ds1343 and ds1344 Signed-off-by: Raghavendra Chandra Ganiga Cc: Alessandro Zummo Cc: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/Kconfig | 10 + drivers/rtc/Makefile | 1 + drivers/rtc/rtc-ds1343.c | 679 +++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 690 insertions(+) create mode 100644 drivers/rtc/rtc-ds1343.c diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index f4e113874e7a..a2f5b31f40d3 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -573,6 +573,16 @@ config RTC_DRV_DS1305 This driver can also be built as a module. If so, the module will be called rtc-ds1305. +config RTC_DRV_DS1343 + tristate "Dallas/Maxim DS1343/DS1344" + help + If you say yes here you get support for the + Dallas/Maxim DS1343 and DS1344 real time clock chips. + Support for trickle charger, alarm is provided. + + This driver can also be built as a module. If so, the module + will be called rtc-ds1343. + config RTC_DRV_DS1347 tristate "Dallas/Maxim DS1347" help diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index 4545b4a88f30..660ab296b956 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -40,6 +40,7 @@ obj-$(CONFIG_RTC_DRV_DS1286) += rtc-ds1286.o obj-$(CONFIG_RTC_DRV_DS1302) += rtc-ds1302.o obj-$(CONFIG_RTC_DRV_DS1305) += rtc-ds1305.o obj-$(CONFIG_RTC_DRV_DS1307) += rtc-ds1307.o +obj-$(CONFIG_RTC_DRV_DS1343) += rtc-ds1343.o obj-$(CONFIG_RTC_DRV_DS1347) += rtc-ds1347.o obj-$(CONFIG_RTC_DRV_DS1374) += rtc-ds1374.o obj-$(CONFIG_RTC_DRV_DS1390) += rtc-ds1390.o diff --git a/drivers/rtc/rtc-ds1343.c b/drivers/rtc/rtc-ds1343.c new file mode 100644 index 000000000000..8ccc75021175 --- /dev/null +++ b/drivers/rtc/rtc-ds1343.c @@ -0,0 +1,679 @@ +/* rtc-ds1343.c + * + * Driver for Dallas Semiconductor DS1343 Low Current, SPI Compatible + * Real Time Clock + * + * Author : Raghavendra Chandra Ganiga + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define DS1343_DRV_VERSION "01.00" +#define DALLAS_MAXIM_DS1343 0 +#define DALLAS_MAXIM_DS1344 1 + +/* RTC DS1343 Registers */ +#define DS1343_SECONDS_REG 0x00 +#define DS1343_MINUTES_REG 0x01 +#define DS1343_HOURS_REG 0x02 +#define DS1343_DAY_REG 0x03 +#define DS1343_DATE_REG 0x04 +#define DS1343_MONTH_REG 0x05 +#define DS1343_YEAR_REG 0x06 +#define DS1343_ALM0_SEC_REG 0x07 +#define DS1343_ALM0_MIN_REG 0x08 +#define DS1343_ALM0_HOUR_REG 0x09 +#define DS1343_ALM0_DAY_REG 0x0A +#define DS1343_ALM1_SEC_REG 0x0B +#define DS1343_ALM1_MIN_REG 0x0C +#define DS1343_ALM1_HOUR_REG 0x0D +#define DS1343_ALM1_DAY_REG 0x0E +#define DS1343_CONTROL_REG 0x0F +#define DS1343_STATUS_REG 0x10 +#define DS1343_TRICKLE_REG 0x11 + +/* DS1343 Control Registers bits */ +#define DS1343_EOSC 0x80 +#define DS1343_DOSF 0x20 +#define DS1343_EGFIL 0x10 +#define DS1343_SQW 0x08 +#define DS1343_INTCN 0x04 +#define DS1343_A1IE 0x02 +#define DS1343_A0IE 0x01 + +/* DS1343 Status Registers bits */ +#define DS1343_OSF 0x80 +#define DS1343_IRQF1 0x02 +#define DS1343_IRQF0 0x01 + +/* DS1343 Trickle Charger Registers bits */ +#define DS1343_TRICKLE_MAGIC 0xa0 +#define DS1343_TRICKLE_DS1 0x08 +#define DS1343_TRICKLE_1K 0x01 +#define DS1343_TRICKLE_2K 0x02 +#define DS1343_TRICKLE_4K 0x03 + +static const struct spi_device_id ds1343_id[] = { + { "ds1343", DALLAS_MAXIM_DS1343 }, + { "ds1344", DALLAS_MAXIM_DS1344 }, + { } +}; +MODULE_DEVICE_TABLE(spi, ds1343_id); + +struct ds1343_priv { + struct spi_device *spi; + struct rtc_device *rtc; + struct regmap *map; + struct mutex mutex; + unsigned int irqen; + int alarm_sec; + int alarm_min; + int alarm_hour; + int alarm_mday; +}; + +static int ds1343_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) +{ + switch (cmd) { +#ifdef RTC_SET_CHARGE + case RTC_SET_CHARGE: + { + int val; + + if (copy_from_user(&val, (int __user *)arg, sizeof(int))) + return -EFAULT; + + return regmap_write(priv->map, DS1343_TRICKLE_REG, val); + } + break; +#endif + } + + return -ENOIOCTLCMD; +} + +static ssize_t ds1343_show_glitchfilter(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ds1343_priv *priv = dev_get_drvdata(dev); + int glitch_filt_status, data; + + regmap_read(priv->map, DS1343_CONTROL_REG, &data); + + glitch_filt_status = !!(data & DS1343_EGFIL); + + if (glitch_filt_status) + return sprintf(buf, "enabled\n"); + else + return sprintf(buf, "disabled\n"); +} + +static ssize_t ds1343_store_glitchfilter(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct ds1343_priv *priv = dev_get_drvdata(dev); + int data; + + regmap_read(priv->map, DS1343_CONTROL_REG, &data); + + if (strncmp(buf, "enabled", 7) == 0) + data |= DS1343_EGFIL; + + else if (strncmp(buf, "disabled", 8) == 0) + data &= ~(DS1343_EGFIL); + + else + return -EINVAL; + + regmap_write(priv->map, DS1343_CONTROL_REG, data); + + return count; +} + +static DEVICE_ATTR(glitch_filter, S_IRUGO | S_IWUSR, ds1343_show_glitchfilter, + ds1343_store_glitchfilter); + +static ssize_t ds1343_show_alarmstatus(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ds1343_priv *priv = dev_get_drvdata(dev); + int alarmstatus, data; + + regmap_read(priv->map, DS1343_CONTROL_REG, &data); + + alarmstatus = !!(data & DS1343_A0IE); + + if (alarmstatus) + return sprintf(buf, "enabled\n"); + else + return sprintf(buf, "disabled\n"); +} + +static DEVICE_ATTR(alarm_status, S_IRUGO, ds1343_show_alarmstatus, NULL); + +static ssize_t ds1343_show_alarmmode(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ds1343_priv *priv = dev_get_drvdata(dev); + int alarm_mode, data; + char *alarm_str; + + regmap_read(priv->map, DS1343_ALM0_SEC_REG, &data); + alarm_mode = (data & 0x80) >> 4; + + regmap_read(priv->map, DS1343_ALM0_MIN_REG, &data); + alarm_mode |= (data & 0x80) >> 5; + + regmap_read(priv->map, DS1343_ALM0_HOUR_REG, &data); + alarm_mode |= (data & 0x80) >> 6; + + regmap_read(priv->map, DS1343_ALM0_DAY_REG, &data); + alarm_mode |= (data & 0x80) >> 7; + + switch (alarm_mode) { + case 15: + alarm_str = "each second"; + break; + + case 7: + alarm_str = "seconds match"; + break; + + case 3: + alarm_str = "minutes and seconds match"; + break; + + case 1: + alarm_str = "hours, minutes and seconds match"; + break; + + case 0: + alarm_str = "day, hours, minutes and seconds match"; + break; + + default: + alarm_str = "invalid"; + break; + } + + return sprintf(buf, "%s\n", alarm_str); +} + +static DEVICE_ATTR(alarm_mode, S_IRUGO, ds1343_show_alarmmode, NULL); + +static ssize_t ds1343_show_tricklecharger(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ds1343_priv *priv = dev_get_drvdata(dev); + int data; + char *diodes = "disabled", *resistors = " "; + + regmap_read(priv->map, DS1343_TRICKLE_REG, &data); + + if ((data & 0xf0) == DS1343_TRICKLE_MAGIC) { + switch (data & 0x0c) { + case DS1343_TRICKLE_DS1: + diodes = "one diode,"; + break; + + default: + diodes = "no diode,"; + break; + } + + switch (data & 0x03) { + case DS1343_TRICKLE_1K: + resistors = "1k Ohm"; + break; + + case DS1343_TRICKLE_2K: + resistors = "2k Ohm"; + break; + + case DS1343_TRICKLE_4K: + resistors = "4k Ohm"; + break; + + default: + diodes = "disabled"; + break; + } + } + + return sprintf(buf, "%s %s\n", diodes, resistors); +} + +static DEVICE_ATTR(trickle_charger, S_IRUGO, ds1343_show_tricklecharger, NULL); + +static int ds1343_sysfs_register(struct device *dev) +{ + int err; + + err = device_create_file(dev, &dev_attr_glitch_filter); + if (err) + return err; + + err = device_create_file(dev, &dev_attr_alarm_status); + if (err) + goto error1; + + err = device_create_file(dev, &dev_attr_alarm_mode); + if (err) + goto error2; + + err = device_create_file(dev, &dev_attr_trickle_charger); + if (!err) + return err; + + device_remove_file(dev, &dev_attr_alarm_mode); + +error2: + device_remove_file(dev, &dev_attr_alarm_status); + +error1: + device_remove_file(dev, &dev_attr_glitch_filter); + + return err; +} + +static void ds1343_sysfs_unregister(struct device *dev) +{ + device_remove_file(dev, &dev_attr_glitch_filter); + device_remove_file(dev, &dev_attr_alarm_status); + device_remove_file(dev, &dev_attr_alarm_mode); + device_remove_file(dev, &dev_attr_trickle_charger); +} + +static int ds1343_read_time(struct device *dev, struct rtc_time *dt) +{ + struct ds1343_priv *priv = dev_get_drvdata(dev); + unsigned char buf[7]; + int res; + + res = regmap_bulk_read(priv->map, DS1343_SECONDS_REG, buf, 7); + if (res) + return res; + + dt->tm_sec = bcd2bin(buf[0]); + dt->tm_min = bcd2bin(buf[1]); + dt->tm_hour = bcd2bin(buf[2] & 0x3F); + dt->tm_wday = bcd2bin(buf[3]) - 1; + dt->tm_mday = bcd2bin(buf[4]); + dt->tm_mon = bcd2bin(buf[5] & 0x1F) - 1; + dt->tm_year = bcd2bin(buf[6]) + 100; /* year offset from 1900 */ + + return rtc_valid_tm(dt); +} + +static int ds1343_set_time(struct device *dev, struct rtc_time *dt) +{ + struct ds1343_priv *priv = dev_get_drvdata(dev); + int res; + + res = regmap_write(priv->map, DS1343_SECONDS_REG, + bin2bcd(dt->tm_sec)); + if (res) + return res; + + res = regmap_write(priv->map, DS1343_MINUTES_REG, + bin2bcd(dt->tm_min)); + if (res) + return res; + + res = regmap_write(priv->map, DS1343_HOURS_REG, + bin2bcd(dt->tm_hour) & 0x3F); + if (res) + return res; + + res = regmap_write(priv->map, DS1343_DAY_REG, + bin2bcd(dt->tm_wday + 1)); + if (res) + return res; + + res = regmap_write(priv->map, DS1343_DATE_REG, + bin2bcd(dt->tm_mday)); + if (res) + return res; + + res = regmap_write(priv->map, DS1343_MONTH_REG, + bin2bcd(dt->tm_mon + 1)); + if (res) + return res; + + dt->tm_year %= 100; + + res = regmap_write(priv->map, DS1343_YEAR_REG, + bin2bcd(dt->tm_year)); + if (res) + return res; + + return 0; +} + +static int ds1343_update_alarm(struct device *dev) +{ + struct ds1343_priv *priv = dev_get_drvdata(dev); + unsigned int control, stat; + unsigned char buf[4]; + int res = 0; + + res = regmap_read(priv->map, DS1343_CONTROL_REG, &control); + if (res) + return res; + + res = regmap_read(priv->map, DS1343_STATUS_REG, &stat); + if (res) + return res; + + control &= ~(DS1343_A0IE); + stat &= ~(DS1343_IRQF0); + + res = regmap_write(priv->map, DS1343_CONTROL_REG, control); + if (res) + return res; + + res = regmap_write(priv->map, DS1343_STATUS_REG, stat); + if (res) + return res; + + buf[0] = priv->alarm_sec < 0 || (priv->irqen & RTC_UF) ? + 0x80 : bin2bcd(priv->alarm_sec) & 0x7F; + buf[1] = priv->alarm_min < 0 || (priv->irqen & RTC_UF) ? + 0x80 : bin2bcd(priv->alarm_min) & 0x7F; + buf[2] = priv->alarm_hour < 0 || (priv->irqen & RTC_UF) ? + 0x80 : bin2bcd(priv->alarm_hour) & 0x3F; + buf[3] = priv->alarm_mday < 0 || (priv->irqen & RTC_UF) ? + 0x80 : bin2bcd(priv->alarm_mday) & 0x7F; + + res = regmap_bulk_write(priv->map, DS1343_ALM0_SEC_REG, buf, 4); + if (res) + return res; + + if (priv->irqen) { + control |= DS1343_A0IE; + res = regmap_write(priv->map, DS1343_CONTROL_REG, control); + } + + return res; +} + +static int ds1343_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) +{ + struct ds1343_priv *priv = dev_get_drvdata(dev); + struct spi_device *spi = priv->spi; + int res = 0; + unsigned int stat; + + if (spi->irq <= 0) + return -EINVAL; + + mutex_lock(&priv->mutex); + + res = regmap_read(priv->map, DS1343_STATUS_REG, &stat); + if (res) + goto out; + + alarm->enabled = !!(priv->irqen & RTC_AF); + alarm->pending = !!(stat & DS1343_IRQF0); + + alarm->time.tm_sec = priv->alarm_sec < 0 ? 0 : priv->alarm_sec; + alarm->time.tm_min = priv->alarm_min < 0 ? 0 : priv->alarm_min; + alarm->time.tm_hour = priv->alarm_hour < 0 ? 0 : priv->alarm_hour; + alarm->time.tm_mday = priv->alarm_mday < 0 ? 0 : priv->alarm_mday; + + alarm->time.tm_mon = -1; + alarm->time.tm_year = -1; + alarm->time.tm_wday = -1; + alarm->time.tm_yday = -1; + alarm->time.tm_isdst = -1; + +out: + mutex_unlock(&priv->mutex); + return res; +} + +static int ds1343_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) +{ + struct ds1343_priv *priv = dev_get_drvdata(dev); + struct spi_device *spi = priv->spi; + int res = 0; + + if (spi->irq <= 0) + return -EINVAL; + + mutex_lock(&priv->mutex); + + priv->alarm_sec = alarm->time.tm_sec; + priv->alarm_min = alarm->time.tm_min; + priv->alarm_hour = alarm->time.tm_hour; + priv->alarm_mday = alarm->time.tm_mday; + + if (alarm->enabled) + priv->irqen |= RTC_AF; + + res = ds1343_update_alarm(dev); + + mutex_unlock(&priv->mutex); + + return res; +} + +static int ds1343_alarm_irq_enable(struct device *dev, unsigned int enabled) +{ + struct ds1343_priv *priv = dev_get_drvdata(dev); + struct spi_device *spi = priv->spi; + int res = 0; + + if (spi->irq <= 0) + return -EINVAL; + + mutex_lock(&priv->mutex); + + if (enabled) + priv->irqen |= RTC_AF; + else + priv->irqen &= ~RTC_AF; + + res = ds1343_update_alarm(dev); + + mutex_unlock(&priv->mutex); + + return res; +} + +static irqreturn_t ds1343_thread(int irq, void *dev_id) +{ + struct ds1343_priv *priv = dev_id; + unsigned int stat, control; + int res = 0; + + mutex_lock(&priv->mutex); + + res = regmap_read(priv->map, DS1343_STATUS_REG, &stat); + if (res) + goto out; + + if (stat & DS1343_IRQF0) { + stat &= ~DS1343_IRQF0; + regmap_write(priv->map, DS1343_STATUS_REG, stat); + + res = regmap_read(priv->map, DS1343_CONTROL_REG, &control); + if (res) + goto out; + + control &= ~DS1343_A0IE; + regmap_write(priv->map, DS1343_CONTROL_REG, control); + + rtc_update_irq(priv->rtc, 1, RTC_AF | RTC_IRQF); + } + +out: + mutex_unlock(&priv->mutex); + return IRQ_HANDLED; +} + +static const struct rtc_class_ops ds1343_rtc_ops = { + .ioctl = ds1343_ioctl, + .read_time = ds1343_read_time, + .set_time = ds1343_set_time, + .read_alarm = ds1343_read_alarm, + .set_alarm = ds1343_set_alarm, + .alarm_irq_enable = ds1343_alarm_irq_enable, +}; + +static int ds1343_probe(struct spi_device *spi) +{ + struct ds1343_priv *priv; + struct regmap_config config; + unsigned int data; + int res; + + memset(&config, 0, sizeof(config)); + config.reg_bits = 8; + config.val_bits = 8; + config.write_flag_mask = 0x80; + + priv = devm_kzalloc(&spi->dev, sizeof(struct ds1343_priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->spi = spi; + mutex_init(&priv->mutex); + + /* RTC DS1347 works in spi mode 3 and + * its chip select is active high + */ + spi->mode = SPI_MODE_3 | SPI_CS_HIGH; + spi->bits_per_word = 8; + res = spi_setup(spi); + if (res) + return res; + + spi_set_drvdata(spi, priv); + + priv->map = devm_regmap_init_spi(spi, &config); + + if (IS_ERR(priv->map)) { + dev_err(&spi->dev, "spi regmap init failed for rtc ds1343\n"); + return PTR_ERR(priv->map); + } + + res = regmap_read(priv->map, DS1343_SECONDS_REG, &data); + if (res) + return res; + + regmap_read(priv->map, DS1343_CONTROL_REG, &data); + data |= DS1343_INTCN; + data &= ~(DS1343_EOSC | DS1343_A1IE | DS1343_A0IE); + regmap_write(priv->map, DS1343_CONTROL_REG, data); + + regmap_read(priv->map, DS1343_STATUS_REG, &data); + data &= ~(DS1343_OSF | DS1343_IRQF1 | DS1343_IRQF0); + regmap_write(priv->map, DS1343_STATUS_REG, data); + + priv->rtc = devm_rtc_device_register(&spi->dev, "ds1343", + &ds1343_rtc_ops, THIS_MODULE); + if (IS_ERR(priv->rtc)) { + dev_err(&spi->dev, "unable to register rtc ds1343\n"); + return PTR_ERR(priv->rtc); + } + + if (spi->irq >= 0) { + res = devm_request_threaded_irq(&spi->dev, spi->irq, NULL, + ds1343_thread, + IRQF_NO_SUSPEND | IRQF_ONESHOT, + "ds1343", priv); + if (res) { + dev_err(&spi->dev, + "unable to request irq for rtc ds1343\n"); + return res; + } + + device_set_wakeup_capable(&spi->dev, 1); + } + + res = ds1343_sysfs_register(&spi->dev); + if (res) + dev_err(&spi->dev, + "unable to create sysfs entries for rtc ds1343\n"); + + return 0; +} + +static int ds1343_remove(struct spi_device *spi) +{ + struct ds1343_priv *priv = spi_get_drvdata(spi); + + if (spi->irq) { + mutex_lock(&priv->mutex); + priv->irqen &= ~RTC_AF; + mutex_unlock(&priv->mutex); + + devm_free_irq(&spi->dev, spi->irq, priv); + } + + spi_set_drvdata(spi, NULL); + + ds1343_sysfs_unregister(&spi->dev); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP + +static int ds1343_suspend(struct device *dev) +{ + struct spi_device *spi = to_spi_device(dev); + + if (spi->irq >= 0 && device_may_wakeup(dev)) + enable_irq_wake(spi->irq); + + return 0; +} + +static int ds1343_resume(struct device *dev) +{ + struct spi_device *spi = to_spi_device(dev); + + if (spi->irq >= 0 && device_may_wakeup(dev)) + disable_irq_wake(spi->irq); + + return 0; +} + +#endif + +static SIMPLE_DEV_PM_OPS(ds1343_pm, ds1343_suspend, ds1343_resume); + +static struct spi_driver ds1343_driver = { + .driver = { + .name = "ds1343", + .owner = THIS_MODULE, + .pm = &ds1343_pm, + }, + .probe = ds1343_probe, + .remove = ds1343_remove, + .id_table = ds1343_id, +}; + +module_spi_driver(ds1343_driver); + +MODULE_DESCRIPTION("DS1343 RTC SPI Driver"); +MODULE_AUTHOR("Raghavendra Chandra Ganiga "); +MODULE_LICENSE("GPL v2"); +MODULE_VERSION(DS1343_DRV_VERSION); -- cgit v1.2.3 From 0dd449b1626c3db6b40fc2c7685bf9b0ac79ce00 Mon Sep 17 00:00:00 2001 From: Raghavendra Ganiga Date: Fri, 6 Jun 2014 14:36:00 -0700 Subject: rtc: fix build error Fix the following build errors reported by kbuild test robot by selecting REGMAP_SPI in Kconfig file drivers/built-in.o: In function `ds1343_probe': rtc-ds1343.c:(.text+0x1baf8f): undefined reference to `devm_regmap_init_spi' Signed-off-by: Raghavendra Chandra Ganiga Acked-by: Alessandro Zummo Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index a2f5b31f40d3..a27958de11ff 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -574,6 +574,7 @@ config RTC_DRV_DS1305 will be called rtc-ds1305. config RTC_DRV_DS1343 + select REGMAP_SPI tristate "Dallas/Maxim DS1343/DS1344" help If you say yes here you get support for the -- cgit v1.2.3 From 10b06b87b77e9fcd7d1282f8cacf9736fb5143b3 Mon Sep 17 00:00:00 2001 From: Raghavendra Ganiga Date: Fri, 6 Jun 2014 14:36:01 -0700 Subject: drivers/rtc/rtc-ds1343.c: fix potential race condition Avoid the potential race condition by avoiding bailing out of driver in probe after registering with rtc subsystem Also the set_alarm , read_alarm and alarm_irq_enable returns error if irq registration fails in probe. Also the sysfs will not create entry for alarm if irq registration fails in probe. Signed-off-by: Raghavendra Chandra Ganiga Acked-by: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-ds1343.c | 38 ++++++++++++++++++++++++-------------- 1 file changed, 24 insertions(+), 14 deletions(-) diff --git a/drivers/rtc/rtc-ds1343.c b/drivers/rtc/rtc-ds1343.c index 8ccc75021175..c3719189dd96 100644 --- a/drivers/rtc/rtc-ds1343.c +++ b/drivers/rtc/rtc-ds1343.c @@ -80,6 +80,7 @@ struct ds1343_priv { struct regmap *map; struct mutex mutex; unsigned int irqen; + int irq; int alarm_sec; int alarm_min; int alarm_hour; @@ -262,28 +263,32 @@ static DEVICE_ATTR(trickle_charger, S_IRUGO, ds1343_show_tricklecharger, NULL); static int ds1343_sysfs_register(struct device *dev) { + struct ds1343_priv *priv = dev_get_drvdata(dev); int err; err = device_create_file(dev, &dev_attr_glitch_filter); if (err) return err; - err = device_create_file(dev, &dev_attr_alarm_status); + err = device_create_file(dev, &dev_attr_trickle_charger); if (err) goto error1; + if (priv->irq <= 0) + return err; + err = device_create_file(dev, &dev_attr_alarm_mode); if (err) goto error2; - err = device_create_file(dev, &dev_attr_trickle_charger); + err = device_create_file(dev, &dev_attr_alarm_status); if (!err) return err; device_remove_file(dev, &dev_attr_alarm_mode); error2: - device_remove_file(dev, &dev_attr_alarm_status); + device_remove_file(dev, &dev_attr_trickle_charger); error1: device_remove_file(dev, &dev_attr_glitch_filter); @@ -293,10 +298,16 @@ error1: static void ds1343_sysfs_unregister(struct device *dev) { + struct ds1343_priv *priv = dev_get_drvdata(dev); + device_remove_file(dev, &dev_attr_glitch_filter); + device_remove_file(dev, &dev_attr_trickle_charger); + + if (priv->irq <= 0) + return; + device_remove_file(dev, &dev_attr_alarm_status); device_remove_file(dev, &dev_attr_alarm_mode); - device_remove_file(dev, &dev_attr_trickle_charger); } static int ds1343_read_time(struct device *dev, struct rtc_time *dt) @@ -415,11 +426,10 @@ static int ds1343_update_alarm(struct device *dev) static int ds1343_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) { struct ds1343_priv *priv = dev_get_drvdata(dev); - struct spi_device *spi = priv->spi; int res = 0; unsigned int stat; - if (spi->irq <= 0) + if (priv->irq <= 0) return -EINVAL; mutex_lock(&priv->mutex); @@ -450,10 +460,9 @@ out: static int ds1343_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) { struct ds1343_priv *priv = dev_get_drvdata(dev); - struct spi_device *spi = priv->spi; int res = 0; - if (spi->irq <= 0) + if (priv->irq <= 0) return -EINVAL; mutex_lock(&priv->mutex); @@ -476,10 +485,9 @@ static int ds1343_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) static int ds1343_alarm_irq_enable(struct device *dev, unsigned int enabled) { struct ds1343_priv *priv = dev_get_drvdata(dev); - struct spi_device *spi = priv->spi; int res = 0; - if (spi->irq <= 0) + if (priv->irq <= 0) return -EINVAL; mutex_lock(&priv->mutex); @@ -593,18 +601,20 @@ static int ds1343_probe(struct spi_device *spi) return PTR_ERR(priv->rtc); } - if (spi->irq >= 0) { + priv->irq = spi->irq; + + if (priv->irq >= 0) { res = devm_request_threaded_irq(&spi->dev, spi->irq, NULL, ds1343_thread, IRQF_NO_SUSPEND | IRQF_ONESHOT, "ds1343", priv); if (res) { + priv->irq = -1; dev_err(&spi->dev, "unable to request irq for rtc ds1343\n"); - return res; + } else { + device_set_wakeup_capable(&spi->dev, 1); } - - device_set_wakeup_capable(&spi->dev, 1); } res = ds1343_sysfs_register(&spi->dev); -- cgit v1.2.3 From 1fcbe42c1b763456b56d492c31e06e27547b0481 Mon Sep 17 00:00:00 2001 From: Josef Gajdusek Date: Fri, 6 Jun 2014 14:36:02 -0700 Subject: drivers/rtc: add support for Microchip MCP795 Add driver for SPI RTC Microchip MCP795. Only supports saving/loading time from the chip (i. e. no alarms/power events/ID). Signed-off-by: Josef Gajdusek Cc: Jingoo Han Acked-by: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/Kconfig | 8 ++ drivers/rtc/Makefile | 1 + drivers/rtc/rtc-mcp795.c | 199 +++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 208 insertions(+) create mode 100644 drivers/rtc/rtc-mcp795.c diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index a27958de11ff..486d34b225d5 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -661,6 +661,14 @@ config RTC_DRV_RX4581 This driver can also be built as a module. If so the module will be called rtc-rx4581. +config RTC_DRV_MCP795 + tristate "Microchip MCP795" + help + If you say yes here you will get support for the Microchip MCP795. + + This driver can also be built as a module. If so the module + will be called rtc-mcp795. + endif # SPI_MASTER comment "Platform RTC drivers" diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index 660ab296b956..9d7775534a3d 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -81,6 +81,7 @@ obj-$(CONFIG_RTC_DRV_MAX8997) += rtc-max8997.o obj-$(CONFIG_RTC_DRV_MAX6902) += rtc-max6902.o obj-$(CONFIG_RTC_DRV_MAX77686) += rtc-max77686.o obj-$(CONFIG_RTC_DRV_MC13XXX) += rtc-mc13xxx.o +obj-$(CONFIG_RTC_DRV_MCP795) += rtc-mcp795.o obj-$(CONFIG_RTC_DRV_MSM6242) += rtc-msm6242.o obj-$(CONFIG_RTC_DRV_MPC5121) += rtc-mpc5121.o obj-$(CONFIG_RTC_DRV_MV) += rtc-mv.o diff --git a/drivers/rtc/rtc-mcp795.c b/drivers/rtc/rtc-mcp795.c new file mode 100644 index 000000000000..34295bf00416 --- /dev/null +++ b/drivers/rtc/rtc-mcp795.c @@ -0,0 +1,199 @@ +/* + * SPI Driver for Microchip MCP795 RTC + * + * Copyright (C) Josef Gajdusek + * + * based on other Linux RTC drivers + * + * Device datasheet: + * http://ww1.microchip.com/downloads/en/DeviceDoc/22280A.pdf + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * */ + +#include +#include +#include +#include +#include +#include + +/* MCP795 Instructions, see datasheet table 3-1 */ +#define MCP795_EEREAD 0x03 +#define MCP795_EEWRITE 0x02 +#define MCP795_EEWRDI 0x04 +#define MCP795_EEWREN 0x06 +#define MCP795_SRREAD 0x05 +#define MCP795_SRWRITE 0x01 +#define MCP795_READ 0x13 +#define MCP795_WRITE 0x12 +#define MCP795_UNLOCK 0x14 +#define MCP795_IDWRITE 0x32 +#define MCP795_IDREAD 0x33 +#define MCP795_CLRWDT 0x44 +#define MCP795_CLRRAM 0x54 + +#define MCP795_ST_BIT 0x80 +#define MCP795_24_BIT 0x40 + +static int mcp795_rtcc_read(struct device *dev, u8 addr, u8 *buf, u8 count) +{ + struct spi_device *spi = to_spi_device(dev); + int ret; + u8 tx[2]; + + tx[0] = MCP795_READ; + tx[1] = addr; + ret = spi_write_then_read(spi, tx, sizeof(tx), buf, count); + + if (ret) + dev_err(dev, "Failed reading %d bytes from address %x.\n", + count, addr); + + return ret; +} + +static int mcp795_rtcc_write(struct device *dev, u8 addr, u8 *data, u8 count) +{ + struct spi_device *spi = to_spi_device(dev); + int ret; + u8 tx[2 + count]; + + tx[0] = MCP795_WRITE; + tx[1] = addr; + memcpy(&tx[2], data, count); + + ret = spi_write(spi, tx, 2 + count); + + if (ret) + dev_err(dev, "Failed to write %d bytes to address %x.\n", + count, addr); + + return ret; +} + +static int mcp795_rtcc_set_bits(struct device *dev, u8 addr, u8 mask, u8 state) +{ + int ret; + u8 tmp; + + ret = mcp795_rtcc_read(dev, addr, &tmp, 1); + if (ret) + return ret; + + if ((tmp & mask) != state) { + tmp = (tmp & ~mask) | state; + ret = mcp795_rtcc_write(dev, addr, &tmp, 1); + } + + return ret; +} + +static int mcp795_set_time(struct device *dev, struct rtc_time *tim) +{ + int ret; + u8 data[7]; + + /* Read first, so we can leave config bits untouched */ + ret = mcp795_rtcc_read(dev, 0x01, data, sizeof(data)); + + if (ret) + return ret; + + data[0] = (data[0] & 0x80) | ((tim->tm_sec / 10) << 4) | (tim->tm_sec % 10); + data[1] = (data[1] & 0x80) | ((tim->tm_min / 10) << 4) | (tim->tm_min % 10); + data[2] = ((tim->tm_hour / 10) << 4) | (tim->tm_hour % 10); + data[4] = ((tim->tm_mday / 10) << 4) | ((tim->tm_mday) % 10); + data[5] = (data[5] & 0x10) | (tim->tm_mon / 10) | (tim->tm_mon % 10); + + if (tim->tm_year > 100) + tim->tm_year -= 100; + + data[6] = ((tim->tm_year / 10) << 4) | (tim->tm_year % 10); + + ret = mcp795_rtcc_write(dev, 0x01, data, sizeof(data)); + + if (ret) + return ret; + + dev_dbg(dev, "Set mcp795: %04d-%02d-%02d %02d:%02d:%02d\n", + tim->tm_year + 1900, tim->tm_mon, tim->tm_mday, + tim->tm_hour, tim->tm_min, tim->tm_sec); + + return 0; +} + +static int mcp795_read_time(struct device *dev, struct rtc_time *tim) +{ + int ret; + u8 data[7]; + + ret = mcp795_rtcc_read(dev, 0x01, data, sizeof(data)); + + if (ret) + return ret; + + tim->tm_sec = ((data[0] & 0x70) >> 4) * 10 + (data[0] & 0x0f); + tim->tm_min = ((data[1] & 0x70) >> 4) * 10 + (data[1] & 0x0f); + tim->tm_hour = ((data[2] & 0x30) >> 4) * 10 + (data[2] & 0x0f); + tim->tm_mday = ((data[4] & 0x30) >> 4) * 10 + (data[4] & 0x0f); + tim->tm_mon = ((data[5] & 0x10) >> 4) * 10 + (data[5] & 0x0f); + tim->tm_year = ((data[6] & 0xf0) >> 4) * 10 + (data[6] & 0x0f) + 100; /* Assume we are in 20xx */ + + dev_dbg(dev, "Read from mcp795: %04d-%02d-%02d %02d:%02d:%02d\n", + tim->tm_year + 1900, tim->tm_mon, tim->tm_mday, + tim->tm_hour, tim->tm_min, tim->tm_sec); + + return rtc_valid_tm(tim); +} + +static struct rtc_class_ops mcp795_rtc_ops = { + .read_time = mcp795_read_time, + .set_time = mcp795_set_time +}; + +static int mcp795_probe(struct spi_device *spi) +{ + struct rtc_device *rtc; + int ret; + + spi->mode = SPI_MODE_0; + spi->bits_per_word = 8; + ret = spi_setup(spi); + if (ret) { + dev_err(&spi->dev, "Unable to setup SPI\n"); + return ret; + } + + /* Start the oscillator */ + mcp795_rtcc_set_bits(&spi->dev, 0x01, MCP795_ST_BIT, MCP795_ST_BIT); + /* Clear the 12 hour mode flag*/ + mcp795_rtcc_set_bits(&spi->dev, 0x03, MCP795_24_BIT, 0); + + rtc = devm_rtc_device_register(&spi->dev, "rtc-mcp795", + &mcp795_rtc_ops, THIS_MODULE); + if (IS_ERR(rtc)) + return PTR_ERR(rtc); + + spi_set_drvdata(spi, rtc); + + return 0; +} + +static struct spi_driver mcp795_driver = { + .driver = { + .name = "rtc-mcp795", + .owner = THIS_MODULE, + }, + .probe = mcp795_probe, +}; + +module_spi_driver(mcp795_driver); + +MODULE_DESCRIPTION("MCP795 RTC SPI Driver"); +MODULE_AUTHOR("Josef Gajdusek "); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("spi:mcp795"); -- cgit v1.2.3 From c2a57550fec132c1e184c42ea13a619f9a9980e5 Mon Sep 17 00:00:00 2001 From: "Opensource [Steve Twiss]" Date: Fri, 6 Jun 2014 14:36:03 -0700 Subject: rtc: da9063: RTC driver Add the RTC driver for DA9063. [akpm@linux-foundation.org: coding-style tweaks] Signed-off-by: Opensource [Steve Twiss] Cc: Alessandro Zummo Cc: Lee Jones Cc: Mark Brown Cc: Philipp Zabel Cc: Samuel Ortiz Cc: David Dajun Chen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/Kconfig | 10 ++ drivers/rtc/Makefile | 1 + drivers/rtc/rtc-da9063.c | 333 +++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 344 insertions(+) create mode 100644 drivers/rtc/rtc-da9063.c diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 486d34b225d5..71988b69eca6 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -777,6 +777,16 @@ config RTC_DRV_DA9055 This driver can also be built as a module. If so, the module will be called rtc-da9055 +config RTC_DRV_DA9063 + tristate "Dialog Semiconductor DA9063 RTC" + depends on MFD_DA9063 + help + If you say yes here you will get support for the RTC subsystem + of the Dialog Semiconductor DA9063. + + This driver can also be built as a module. If so, the module + will be called "rtc-da9063". + config RTC_DRV_EFI tristate "EFI RTC" depends on IA64 diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index 9d7775534a3d..70347d041d10 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -32,6 +32,7 @@ obj-$(CONFIG_RTC_DRV_CMOS) += rtc-cmos.o obj-$(CONFIG_RTC_DRV_COH901331) += rtc-coh901331.o obj-$(CONFIG_RTC_DRV_DA9052) += rtc-da9052.o obj-$(CONFIG_RTC_DRV_DA9055) += rtc-da9055.o +obj-$(CONFIG_RTC_DRV_DA9063) += rtc-da9063.o obj-$(CONFIG_RTC_DRV_DAVINCI) += rtc-davinci.o obj-$(CONFIG_RTC_DRV_DM355EVM) += rtc-dm355evm.o obj-$(CONFIG_RTC_DRV_VRTC) += rtc-mrst.o diff --git a/drivers/rtc/rtc-da9063.c b/drivers/rtc/rtc-da9063.c new file mode 100644 index 000000000000..595393098b09 --- /dev/null +++ b/drivers/rtc/rtc-da9063.c @@ -0,0 +1,333 @@ +/* rtc-da9063.c - Real time clock device driver for DA9063 + * Copyright (C) 2013-14 Dialog Semiconductor Ltd. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define YEARS_TO_DA9063(year) ((year) - 100) +#define MONTHS_TO_DA9063(month) ((month) + 1) +#define YEARS_FROM_DA9063(year) ((year) + 100) +#define MONTHS_FROM_DA9063(month) ((month) - 1) + +#define RTC_DATA_LEN (DA9063_REG_COUNT_Y - DA9063_REG_COUNT_S + 1) +#define RTC_SEC 0 +#define RTC_MIN 1 +#define RTC_HOUR 2 +#define RTC_DAY 3 +#define RTC_MONTH 4 +#define RTC_YEAR 5 + +struct da9063_rtc { + struct rtc_device *rtc_dev; + struct da9063 *hw; + struct rtc_time alarm_time; + bool rtc_sync; +}; + +static void da9063_data_to_tm(u8 *data, struct rtc_time *tm) +{ + tm->tm_sec = data[RTC_SEC] & DA9063_COUNT_SEC_MASK; + tm->tm_min = data[RTC_MIN] & DA9063_COUNT_MIN_MASK; + tm->tm_hour = data[RTC_HOUR] & DA9063_COUNT_HOUR_MASK; + tm->tm_mday = data[RTC_DAY] & DA9063_COUNT_DAY_MASK; + tm->tm_mon = MONTHS_FROM_DA9063(data[RTC_MONTH] & + DA9063_COUNT_MONTH_MASK); + tm->tm_year = YEARS_FROM_DA9063(data[RTC_YEAR] & + DA9063_COUNT_YEAR_MASK); +} + +static void da9063_tm_to_data(struct rtc_time *tm, u8 *data) +{ + data[RTC_SEC] &= ~DA9063_COUNT_SEC_MASK; + data[RTC_SEC] |= tm->tm_sec & DA9063_COUNT_SEC_MASK; + + data[RTC_MIN] &= ~DA9063_COUNT_MIN_MASK; + data[RTC_MIN] |= tm->tm_min & DA9063_COUNT_MIN_MASK; + + data[RTC_HOUR] &= ~DA9063_COUNT_HOUR_MASK; + data[RTC_HOUR] |= tm->tm_hour & DA9063_COUNT_HOUR_MASK; + + data[RTC_DAY] &= ~DA9063_COUNT_DAY_MASK; + data[RTC_DAY] |= tm->tm_mday & DA9063_COUNT_DAY_MASK; + + data[RTC_MONTH] &= ~DA9063_COUNT_MONTH_MASK; + data[RTC_MONTH] |= MONTHS_TO_DA9063(tm->tm_mon) & + DA9063_COUNT_MONTH_MASK; + + data[RTC_YEAR] &= ~DA9063_COUNT_YEAR_MASK; + data[RTC_YEAR] |= YEARS_TO_DA9063(tm->tm_year) & + DA9063_COUNT_YEAR_MASK; +} + +static int da9063_rtc_stop_alarm(struct device *dev) +{ + struct da9063_rtc *rtc = dev_get_drvdata(dev); + + return regmap_update_bits(rtc->hw->regmap, DA9063_REG_ALARM_Y, + DA9063_ALARM_ON, 0); +} + +static int da9063_rtc_start_alarm(struct device *dev) +{ + struct da9063_rtc *rtc = dev_get_drvdata(dev); + + return regmap_update_bits(rtc->hw->regmap, DA9063_REG_ALARM_Y, + DA9063_ALARM_ON, DA9063_ALARM_ON); +} + +static int da9063_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + struct da9063_rtc *rtc = dev_get_drvdata(dev); + unsigned long tm_secs; + unsigned long al_secs; + u8 data[RTC_DATA_LEN]; + int ret; + + ret = regmap_bulk_read(rtc->hw->regmap, DA9063_REG_COUNT_S, + data, RTC_DATA_LEN); + if (ret < 0) { + dev_err(dev, "Failed to read RTC time data: %d\n", ret); + return ret; + } + + if (!(data[RTC_SEC] & DA9063_RTC_READ)) { + dev_dbg(dev, "RTC not yet ready to be read by the host\n"); + return -EINVAL; + } + + da9063_data_to_tm(data, tm); + + rtc_tm_to_time(tm, &tm_secs); + rtc_tm_to_time(&rtc->alarm_time, &al_secs); + + /* handle the rtc synchronisation delay */ + if (rtc->rtc_sync == true && al_secs - tm_secs == 1) + memcpy(tm, &rtc->alarm_time, sizeof(struct rtc_time)); + else + rtc->rtc_sync = false; + + return rtc_valid_tm(tm); +} + +static int da9063_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + struct da9063_rtc *rtc = dev_get_drvdata(dev); + u8 data[RTC_DATA_LEN]; + int ret; + + da9063_tm_to_data(tm, data); + ret = regmap_bulk_write(rtc->hw->regmap, DA9063_REG_COUNT_S, + data, RTC_DATA_LEN); + if (ret < 0) + dev_err(dev, "Failed to set RTC time data: %d\n", ret); + + return ret; +} + +static int da9063_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct da9063_rtc *rtc = dev_get_drvdata(dev); + u8 data[RTC_DATA_LEN]; + int ret; + unsigned int val; + + ret = regmap_bulk_read(rtc->hw->regmap, DA9063_REG_ALARM_S, + &data[RTC_SEC], RTC_DATA_LEN); + if (ret < 0) + return ret; + + da9063_data_to_tm(data, &alrm->time); + + alrm->enabled = !!(data[RTC_YEAR] & DA9063_ALARM_ON); + + ret = regmap_read(rtc->hw->regmap, DA9063_REG_EVENT_A, &val); + if (ret < 0) + return ret; + + if (val & (DA9063_E_ALARM)) + alrm->pending = 1; + else + alrm->pending = 0; + + return 0; +} + +static int da9063_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct da9063_rtc *rtc = dev_get_drvdata(dev); + u8 data[RTC_DATA_LEN]; + int ret; + + da9063_tm_to_data(&alrm->time, data); + + ret = da9063_rtc_stop_alarm(dev); + if (ret < 0) { + dev_err(dev, "Failed to stop alarm: %d\n", ret); + return ret; + } + + ret = regmap_bulk_write(rtc->hw->regmap, DA9063_REG_ALARM_S, + data, RTC_DATA_LEN); + if (ret < 0) { + dev_err(dev, "Failed to write alarm: %d\n", ret); + return ret; + } + + rtc->alarm_time = alrm->time; + + if (alrm->enabled) { + ret = da9063_rtc_start_alarm(dev); + if (ret < 0) { + dev_err(dev, "Failed to start alarm: %d\n", ret); + return ret; + } + } + + return ret; +} + +static int da9063_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) +{ + if (enabled) + return da9063_rtc_start_alarm(dev); + else + return da9063_rtc_stop_alarm(dev); +} + +static irqreturn_t da9063_alarm_event(int irq, void *data) +{ + struct da9063_rtc *rtc = data; + + regmap_update_bits(rtc->hw->regmap, DA9063_REG_ALARM_Y, + DA9063_ALARM_ON, 0); + + rtc->rtc_sync = true; + rtc_update_irq(rtc->rtc_dev, 1, RTC_IRQF | RTC_AF); + + return IRQ_HANDLED; +} + +static const struct rtc_class_ops da9063_rtc_ops = { + .read_time = da9063_rtc_read_time, + .set_time = da9063_rtc_set_time, + .read_alarm = da9063_rtc_read_alarm, + .set_alarm = da9063_rtc_set_alarm, + .alarm_irq_enable = da9063_rtc_alarm_irq_enable, +}; + +static int da9063_rtc_probe(struct platform_device *pdev) +{ + struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); + struct da9063_rtc *rtc; + int irq_alarm; + u8 data[RTC_DATA_LEN]; + int ret; + + ret = regmap_update_bits(da9063->regmap, DA9063_REG_CONTROL_E, + DA9063_RTC_EN, DA9063_RTC_EN); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to enable RTC\n"); + goto err; + } + + ret = regmap_update_bits(da9063->regmap, DA9063_REG_EN_32K, + DA9063_CRYSTAL, DA9063_CRYSTAL); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to run 32kHz oscillator\n"); + goto err; + } + + ret = regmap_update_bits(da9063->regmap, DA9063_REG_ALARM_S, + DA9063_ALARM_STATUS_TICK | DA9063_ALARM_STATUS_ALARM, + 0); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to access RTC alarm register\n"); + goto err; + } + + ret = regmap_update_bits(da9063->regmap, DA9063_REG_ALARM_S, + DA9063_ALARM_STATUS_ALARM, + DA9063_ALARM_STATUS_ALARM); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to access RTC alarm register\n"); + goto err; + } + + ret = regmap_update_bits(da9063->regmap, DA9063_REG_ALARM_Y, + DA9063_TICK_ON, 0); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to disable TICKs\n"); + goto err; + } + + ret = regmap_bulk_read(da9063->regmap, DA9063_REG_ALARM_S, + data, RTC_DATA_LEN); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to read initial alarm data: %d\n", + ret); + goto err; + } + + rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL); + if (!rtc) + return -ENOMEM; + + platform_set_drvdata(pdev, rtc); + + irq_alarm = platform_get_irq_byname(pdev, "ALARM"); + ret = devm_request_threaded_irq(&pdev->dev, irq_alarm, NULL, + da9063_alarm_event, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, + "ALARM", rtc); + if (ret) { + dev_err(&pdev->dev, "Failed to request ALARM IRQ %d: %d\n", + irq_alarm, ret); + goto err; + } + + rtc->hw = da9063; + rtc->rtc_dev = devm_rtc_device_register(&pdev->dev, DA9063_DRVNAME_RTC, + &da9063_rtc_ops, THIS_MODULE); + if (IS_ERR(rtc->rtc_dev)) + return PTR_ERR(rtc->rtc_dev); + + da9063_data_to_tm(data, &rtc->alarm_time); + rtc->rtc_sync = false; +err: + return ret; +} + +static struct platform_driver da9063_rtc_driver = { + .probe = da9063_rtc_probe, + .driver = { + .name = DA9063_DRVNAME_RTC, + .owner = THIS_MODULE, + }, +}; + +module_platform_driver(da9063_rtc_driver); + +MODULE_AUTHOR("S Twiss "); +MODULE_DESCRIPTION("Real time clock device driver for Dialog DA9063"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" DA9063_DRVNAME_RTC); -- cgit v1.2.3 From 337b600f898583b50b67e0bbff0667db2393d614 Mon Sep 17 00:00:00 2001 From: Sekhar Nori Date: Fri, 6 Jun 2014 14:36:04 -0700 Subject: drivers/rtc/rtc-omap.c: remove multiple device id checks Remove multiple superfluous device id checks. Since an id_table is present in the driver probe() should never encounter an empty device id entry. In case of OF style match, of_match_device() returns an matching entry. For paranoia sake, check for device id entry once and fail probe() if none is found. This is much better than checking for it multiple times. Signed-off-by: Sekhar Nori Cc: Alessandro Zummo Cc: Lokesh Vutla Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-omap.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c index 26de5f8c2ae4..70f51491809d 100644 --- a/drivers/rtc/rtc-omap.c +++ b/drivers/rtc/rtc-omap.c @@ -352,6 +352,12 @@ static int __init omap_rtc_probe(struct platform_device *pdev) if (of_id) pdev->id_entry = of_id->data; + id_entry = platform_get_device_id(pdev); + if (!id_entry) { + dev_err(&pdev->dev, "no matching device entry\n"); + return -ENODEV; + } + omap_rtc_timer = platform_get_irq(pdev, 0); if (omap_rtc_timer <= 0) { pr_debug("%s: no update irq?\n", pdev->name); @@ -373,8 +379,7 @@ static int __init omap_rtc_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); pm_runtime_get_sync(&pdev->dev); - id_entry = platform_get_device_id(pdev); - if (id_entry && (id_entry->driver_data & OMAP_RTC_HAS_KICKER)) { + if (id_entry->driver_data & OMAP_RTC_HAS_KICKER) { rtc_writel(KICK0_VALUE, OMAP_RTC_KICK0_REG); rtc_writel(KICK1_VALUE, OMAP_RTC_KICK1_REG); } @@ -452,7 +457,7 @@ static int __init omap_rtc_probe(struct platform_device *pdev) return 0; fail0: - if (id_entry && (id_entry->driver_data & OMAP_RTC_HAS_KICKER)) + if (id_entry->driver_data & OMAP_RTC_HAS_KICKER) rtc_writel(0, OMAP_RTC_KICK0_REG); pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); @@ -469,7 +474,7 @@ static int __exit omap_rtc_remove(struct platform_device *pdev) /* leave rtc running, but disable irqs */ rtc_write(0, OMAP_RTC_INTERRUPTS_REG); - if (id_entry && (id_entry->driver_data & OMAP_RTC_HAS_KICKER)) + if (id_entry->driver_data & OMAP_RTC_HAS_KICKER) rtc_writel(0, OMAP_RTC_KICK0_REG); /* Disable the clock/module */ -- cgit v1.2.3 From 92adb96aa4fcb460c6b174384cc74418e3d95cda Mon Sep 17 00:00:00 2001 From: Sekhar Nori Date: Fri, 6 Jun 2014 14:36:05 -0700 Subject: drivers/rtc/rtc-omap.c: use BIT() macro Use BIT() macro for RTC_HAS_ defines instead of hand-writing bit masks. Use BIT() macros for register bit field definitions. While at it, fix indentation done using spaces. No functional change in this patch. Signed-off-by: Sekhar Nori Cc: Alessandro Zummo Cc: Lokesh Vutla Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-omap.c | 42 +++++++++++++++++++++--------------------- 1 file changed, 21 insertions(+), 21 deletions(-) diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c index 70f51491809d..734e40804732 100644 --- a/drivers/rtc/rtc-omap.c +++ b/drivers/rtc/rtc-omap.c @@ -73,43 +73,43 @@ #define OMAP_RTC_IRQWAKEEN 0x7c /* OMAP_RTC_CTRL_REG bit fields: */ -#define OMAP_RTC_CTRL_SPLIT (1<<7) -#define OMAP_RTC_CTRL_DISABLE (1<<6) -#define OMAP_RTC_CTRL_SET_32_COUNTER (1<<5) -#define OMAP_RTC_CTRL_TEST (1<<4) -#define OMAP_RTC_CTRL_MODE_12_24 (1<<3) -#define OMAP_RTC_CTRL_AUTO_COMP (1<<2) -#define OMAP_RTC_CTRL_ROUND_30S (1<<1) -#define OMAP_RTC_CTRL_STOP (1<<0) +#define OMAP_RTC_CTRL_SPLIT BIT(7) +#define OMAP_RTC_CTRL_DISABLE BIT(6) +#define OMAP_RTC_CTRL_SET_32_COUNTER BIT(5) +#define OMAP_RTC_CTRL_TEST BIT(4) +#define OMAP_RTC_CTRL_MODE_12_24 BIT(3) +#define OMAP_RTC_CTRL_AUTO_COMP BIT(2) +#define OMAP_RTC_CTRL_ROUND_30S BIT(1) +#define OMAP_RTC_CTRL_STOP BIT(0) /* OMAP_RTC_STATUS_REG bit fields: */ -#define OMAP_RTC_STATUS_POWER_UP (1<<7) -#define OMAP_RTC_STATUS_ALARM (1<<6) -#define OMAP_RTC_STATUS_1D_EVENT (1<<5) -#define OMAP_RTC_STATUS_1H_EVENT (1<<4) -#define OMAP_RTC_STATUS_1M_EVENT (1<<3) -#define OMAP_RTC_STATUS_1S_EVENT (1<<2) -#define OMAP_RTC_STATUS_RUN (1<<1) -#define OMAP_RTC_STATUS_BUSY (1<<0) +#define OMAP_RTC_STATUS_POWER_UP BIT(7) +#define OMAP_RTC_STATUS_ALARM BIT(6) +#define OMAP_RTC_STATUS_1D_EVENT BIT(5) +#define OMAP_RTC_STATUS_1H_EVENT BIT(4) +#define OMAP_RTC_STATUS_1M_EVENT BIT(3) +#define OMAP_RTC_STATUS_1S_EVENT BIT(2) +#define OMAP_RTC_STATUS_RUN BIT(1) +#define OMAP_RTC_STATUS_BUSY BIT(0) /* OMAP_RTC_INTERRUPTS_REG bit fields: */ -#define OMAP_RTC_INTERRUPTS_IT_ALARM (1<<3) -#define OMAP_RTC_INTERRUPTS_IT_TIMER (1<<2) +#define OMAP_RTC_INTERRUPTS_IT_ALARM BIT(3) +#define OMAP_RTC_INTERRUPTS_IT_TIMER BIT(2) /* OMAP_RTC_IRQWAKEEN bit fields: */ -#define OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN (1<<1) +#define OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN BIT(1) /* OMAP_RTC_KICKER values */ #define KICK0_VALUE 0x83e70b13 #define KICK1_VALUE 0x95a4f1e0 -#define OMAP_RTC_HAS_KICKER 0x1 +#define OMAP_RTC_HAS_KICKER BIT(0) /* * Few RTC IP revisions has special WAKE-EN Register to enable Wakeup * generation for event Alarm. */ -#define OMAP_RTC_HAS_IRQWAKEEN 0x2 +#define OMAP_RTC_HAS_IRQWAKEEN BIT(1) static void __iomem *rtc_base; -- cgit v1.2.3 From cd914bba03d8a2ba30bf7385c5e2da9ac30f574f Mon Sep 17 00:00:00 2001 From: Sekhar Nori Date: Fri, 6 Jun 2014 14:36:06 -0700 Subject: drivers/rtc/rtc-omap.c: add support for enabling 32khz clock Newer versions of OMAP RTC IP such as those found in AM335x and DRA7x need an explicit enable of 32khz functional clock which ticks the RTC. AM335x support was working so far because of settings done in U-Boot. However, the DRA7x U-Boot does no such enable of 32khz clock and this patch is need to get the RTC to work on DRA7x at least. In general, it is better to not depend on settings done in U-Boot. Thanks to Lokesh Vutla for noticing this. Signed-off-by: Sekhar Nori Cc: Alessandro Zummo Cc: Lokesh Vutla Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-omap.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c index 734e40804732..03bce134414c 100644 --- a/drivers/rtc/rtc-omap.c +++ b/drivers/rtc/rtc-omap.c @@ -96,6 +96,9 @@ #define OMAP_RTC_INTERRUPTS_IT_ALARM BIT(3) #define OMAP_RTC_INTERRUPTS_IT_TIMER BIT(2) +/* OMAP_RTC_OSC_REG bit fields: */ +#define OMAP_RTC_OSC_32KCLK_EN BIT(6) + /* OMAP_RTC_IRQWAKEEN bit fields: */ #define OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN BIT(1) @@ -111,6 +114,12 @@ */ #define OMAP_RTC_HAS_IRQWAKEEN BIT(1) +/* + * Some RTC IP revisions (like those in AM335x and DRA7x) need + * the 32KHz clock to be explicitly enabled. + */ +#define OMAP_RTC_HAS_32KCLK_EN BIT(2) + static void __iomem *rtc_base; #define rtc_read(addr) readb(rtc_base + (addr)) @@ -319,7 +328,8 @@ static struct platform_device_id omap_rtc_devtype[] = { }, [OMAP_RTC_DATA_AM3352_IDX] = { .name = "am3352-rtc", - .driver_data = OMAP_RTC_HAS_KICKER | OMAP_RTC_HAS_IRQWAKEEN, + .driver_data = OMAP_RTC_HAS_KICKER | OMAP_RTC_HAS_IRQWAKEEN | + OMAP_RTC_HAS_32KCLK_EN, }, [OMAP_RTC_DATA_DA830_IDX] = { .name = "da830-rtc", @@ -398,6 +408,10 @@ static int __init omap_rtc_probe(struct platform_device *pdev) */ rtc_write(0, OMAP_RTC_INTERRUPTS_REG); + /* enable RTC functional clock */ + if (id_entry->driver_data & OMAP_RTC_HAS_32KCLK_EN) + rtc_writel(OMAP_RTC_OSC_32KCLK_EN, OMAP_RTC_OSC_REG); + /* clear old status */ reg = rtc_read(OMAP_RTC_STATUS_REG); if (reg & (u8) OMAP_RTC_STATUS_POWER_UP) { -- cgit v1.2.3 From 778575ff30294adea9fc1d935dc1364e25f8f138 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Fri, 6 Jun 2014 14:36:07 -0700 Subject: drivers/rtc/rtc-bfin.c: do not abort when requesting irq fails The RTC framework does not let you return an error once a call to devm_rtc_device_register has succeeded. Avoid doing that when the IRQ request fails as we can still support reading/writing the clock without the IRQ. Signed-off-by: Mike Frysinger Reported-by: Ales Novak Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-bfin.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/rtc/rtc-bfin.c b/drivers/rtc/rtc-bfin.c index 0c53f452849d..fe4bdb06a55a 100644 --- a/drivers/rtc/rtc-bfin.c +++ b/drivers/rtc/rtc-bfin.c @@ -346,7 +346,7 @@ static int bfin_rtc_probe(struct platform_device *pdev) { struct bfin_rtc *rtc; struct device *dev = &pdev->dev; - int ret = 0; + int ret; unsigned long timeout = jiffies + HZ; dev_dbg_stamp(dev); @@ -361,16 +361,17 @@ static int bfin_rtc_probe(struct platform_device *pdev) /* Register our RTC with the RTC framework */ rtc->rtc_dev = devm_rtc_device_register(dev, pdev->name, &bfin_rtc_ops, THIS_MODULE); - if (unlikely(IS_ERR(rtc->rtc_dev))) { - ret = PTR_ERR(rtc->rtc_dev); - goto err; - } + if (unlikely(IS_ERR(rtc->rtc_dev))) + return PTR_ERR(rtc->rtc_dev); /* Grab the IRQ and init the hardware */ ret = devm_request_irq(dev, IRQ_RTC, bfin_rtc_interrupt, 0, pdev->name, dev); if (unlikely(ret)) - goto err; + dev_err(&pdev->dev, + "unable to request IRQ; alarm won't work, " + "and writes will be delayed\n"); + /* sometimes the bootloader touched things, but the write complete was not * enabled, so let's just do a quick timeout here since the IRQ will not fire ... */ @@ -381,9 +382,6 @@ static int bfin_rtc_probe(struct platform_device *pdev) bfin_write_RTC_SWCNT(0); return 0; - -err: - return ret; } static int bfin_rtc_remove(struct platform_device *pdev) -- cgit v1.2.3 From 68164a73b1055191975419f5da7180294902f461 Mon Sep 17 00:00:00 2001 From: Heiko Stuebner Date: Fri, 6 Jun 2014 14:36:08 -0700 Subject: drivers/rtc/rtc-hym8563.c: add optional clock-output-names property This enables the setting of a custom clock name for the clock provided by the hym8563 rtc. Signed-off-by: Heiko Stuebner Reviewed-by: Mike Turquette Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/devicetree/bindings/rtc/haoyu,hym8563.txt | 3 +++ drivers/rtc/rtc-hym8563.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/rtc/haoyu,hym8563.txt b/Documentation/devicetree/bindings/rtc/haoyu,hym8563.txt index 31406fd4a43e..5c199ee044cb 100644 --- a/Documentation/devicetree/bindings/rtc/haoyu,hym8563.txt +++ b/Documentation/devicetree/bindings/rtc/haoyu,hym8563.txt @@ -9,6 +9,9 @@ Required properties: - interrupts: rtc alarm/event interrupt - #clock-cells: the value should be 0 +Optional properties: +- clock-output-names: From common clock binding + Example: hym8563: hym8563@51 { diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c index e3290abbb03e..b936bb4096b5 100644 --- a/drivers/rtc/rtc-hym8563.c +++ b/drivers/rtc/rtc-hym8563.c @@ -418,6 +418,9 @@ static struct clk *hym8563_clkout_register_clk(struct hym8563 *hym8563) init.num_parents = 0; hym8563->clkout_hw.init = &init; + /* optional override of the clockname */ + of_property_read_string(node, "clock-output-names", &init.name); + /* register the clock */ clk = clk_register(&client->dev, &hym8563->clkout_hw); -- cgit v1.2.3 From 2fe121e1f5aa3bf31b418a9790db6c400e922291 Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Fri, 6 Jun 2014 14:36:09 -0700 Subject: rtc: rtc-at91rm9200: fix infinite wait for ACKUPD irq The rtc user must wait at least 1 sec between each time/calandar update (see atmel's datasheet chapter "Updating Time/Calendar"). Use the 1Hz interrupt to update the at91_rtc_upd_rdy flag and wait for the at91_rtc_wait_upd_rdy event if the rtc is not ready. This patch fixes a deadlock in an uninterruptible wait when the RTC is updated more than once every second. AFAICT the bug is here from the beginning, but I think we should at least backport this fix to 3.10 and the following longterm and stable releases. Signed-off-by: Boris BREZILLON Reported-by: Bryan Evenson Tested-by: Bryan Evenson Cc: Andrew Victor Cc: Nicolas Ferre Cc: Jean-Christophe Plagniol-Villard Cc: Alessandro Zummo Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-at91rm9200.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c index 3281c90691c3..44fe83ee9bee 100644 --- a/drivers/rtc/rtc-at91rm9200.c +++ b/drivers/rtc/rtc-at91rm9200.c @@ -48,6 +48,7 @@ struct at91_rtc_config { static const struct at91_rtc_config *at91_rtc_config; static DECLARE_COMPLETION(at91_rtc_updated); +static DECLARE_COMPLETION(at91_rtc_upd_rdy); static unsigned int at91_alarm_year = AT91_RTC_EPOCH; static void __iomem *at91_rtc_regs; static int irq; @@ -161,6 +162,8 @@ static int at91_rtc_settime(struct device *dev, struct rtc_time *tm) 1900 + tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec); + wait_for_completion(&at91_rtc_upd_rdy); + /* Stop Time/Calendar from counting */ cr = at91_rtc_read(AT91_RTC_CR); at91_rtc_write(AT91_RTC_CR, cr | AT91_RTC_UPDCAL | AT91_RTC_UPDTIM); @@ -183,7 +186,9 @@ static int at91_rtc_settime(struct device *dev, struct rtc_time *tm) /* Restart Time/Calendar */ cr = at91_rtc_read(AT91_RTC_CR); + at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_SECEV); at91_rtc_write(AT91_RTC_CR, cr & ~(AT91_RTC_UPDCAL | AT91_RTC_UPDTIM)); + at91_rtc_write_ier(AT91_RTC_SECEV); return 0; } @@ -290,8 +295,10 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id) if (rtsr) { /* this interrupt is shared! Is it ours? */ if (rtsr & AT91_RTC_ALARM) events |= (RTC_AF | RTC_IRQF); - if (rtsr & AT91_RTC_SECEV) - events |= (RTC_UF | RTC_IRQF); + if (rtsr & AT91_RTC_SECEV) { + complete(&at91_rtc_upd_rdy); + at91_rtc_write_idr(AT91_RTC_SECEV); + } if (rtsr & AT91_RTC_ACKUPD) complete(&at91_rtc_updated); @@ -413,6 +420,11 @@ static int __init at91_rtc_probe(struct platform_device *pdev) return PTR_ERR(rtc); platform_set_drvdata(pdev, rtc); + /* enable SECEV interrupt in order to initialize at91_rtc_upd_rdy + * completion. + */ + at91_rtc_write_ier(AT91_RTC_SECEV); + dev_info(&pdev->dev, "AT91 Real Time Clock driver.\n"); return 0; } -- cgit v1.2.3 From 9dcc87fec8947308e0111c65dcd881e6aa5b1673 Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Fri, 6 Jun 2014 14:36:11 -0700 Subject: ARM: at91: fix at91_sysirq_mask_rtc for sam9x5 SoCs sam9x5 SoCs have the following errata: "RTC: Interrupt Mask Register cannot be used Interrupt Mask Register read always returns 0." Hence we should not rely on what IMR claims about already masked IRQs and just disable all IRQs. Signed-off-by: Boris BREZILLON Reported-by: Bryan Evenson Reviewed-by: Johan Hovold Acked-by: Nicolas Ferre Cc: Bryan Evenson Cc: Andrew Victor Cc: Jean-Christophe Plagniol-Villard Cc: Alessandro Zummo Cc: Mark Roszko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arm/mach-at91/sysirq_mask.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/arch/arm/mach-at91/sysirq_mask.c b/arch/arm/mach-at91/sysirq_mask.c index 2ba694f9626b..f8bc3511a8c8 100644 --- a/arch/arm/mach-at91/sysirq_mask.c +++ b/arch/arm/mach-at91/sysirq_mask.c @@ -25,24 +25,28 @@ #include "generic.h" -#define AT91_RTC_IDR 0x24 /* Interrupt Disable Register */ -#define AT91_RTC_IMR 0x28 /* Interrupt Mask Register */ +#define AT91_RTC_IDR 0x24 /* Interrupt Disable Register */ +#define AT91_RTC_IMR 0x28 /* Interrupt Mask Register */ +#define AT91_RTC_IRQ_MASK 0x1f /* Available IRQs mask */ void __init at91_sysirq_mask_rtc(u32 rtc_base) { void __iomem *base; - u32 mask; base = ioremap(rtc_base, 64); if (!base) return; - mask = readl_relaxed(base + AT91_RTC_IMR); - if (mask) { - pr_info("AT91: Disabling rtc irq\n"); - writel_relaxed(mask, base + AT91_RTC_IDR); - (void)readl_relaxed(base + AT91_RTC_IMR); /* flush */ - } + /* + * sam9x5 SoCs have the following errata: + * "RTC: Interrupt Mask Register cannot be used + * Interrupt Mask Register read always returns 0." + * + * Hence we're not relying on IMR values to disable + * interrupts. + */ + writel_relaxed(AT91_RTC_IRQ_MASK, base + AT91_RTC_IDR); + (void)readl_relaxed(base + AT91_RTC_IMR); /* flush */ iounmap(base); } -- cgit v1.2.3 From ab7f580b8e6ca9b90a00a28e7edfe2d9e5b8fed9 Mon Sep 17 00:00:00 2001 From: Lokesh Vutla Date: Fri, 6 Jun 2014 14:36:12 -0700 Subject: drivers/rtc/rtc-omap.c: enable RTC_IRQWAKEEN bits when Alarm is set When RTC CLKTRCTRL bit is configured in HW_AUTO, module goes to sleep in IDLE state. The Alarm SWakeup event can be used to wakeup the RTC when it is in IDLE state. In order to do so, the alarm needs to be set and enabled before RTC enters the IDLE state. Also the wakeup generation for alarm/timer event needs to be set (bits [1:0] in RTC_IRQWAKEEN register). Currently RTC_IRQWAKEEN bits are set only in suspend/resume paths. With this ALARM interrupts are not generated when it enters IDLE state. So programming the RTC_IRQWAKEEN bits when ever ALARM is set. Signed-off-by: Lokesh Vutla Acked-by: Sekhar Nori Cc: Grant Likely Cc: Rob Herring Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-omap.c | 67 +++++++++++++++++++++++++------------------------- 1 file changed, 33 insertions(+), 34 deletions(-) diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c index 03bce134414c..21142e6574a9 100644 --- a/drivers/rtc/rtc-omap.c +++ b/drivers/rtc/rtc-omap.c @@ -171,17 +171,28 @@ static irqreturn_t rtc_irq(int irq, void *rtc) static int omap_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) { - u8 reg; + u8 reg, irqwake_reg = 0; + struct platform_device *pdev = to_platform_device(dev); + const struct platform_device_id *id_entry = + platform_get_device_id(pdev); local_irq_disable(); rtc_wait_not_busy(); reg = rtc_read(OMAP_RTC_INTERRUPTS_REG); - if (enabled) + if (id_entry->driver_data & OMAP_RTC_HAS_IRQWAKEEN) + irqwake_reg = rtc_read(OMAP_RTC_IRQWAKEEN); + + if (enabled) { reg |= OMAP_RTC_INTERRUPTS_IT_ALARM; - else + irqwake_reg |= OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN; + } else { reg &= ~OMAP_RTC_INTERRUPTS_IT_ALARM; + irqwake_reg &= ~OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN; + } rtc_wait_not_busy(); rtc_write(reg, OMAP_RTC_INTERRUPTS_REG); + if (id_entry->driver_data & OMAP_RTC_HAS_IRQWAKEEN) + rtc_write(irqwake_reg, OMAP_RTC_IRQWAKEEN); local_irq_enable(); return 0; @@ -281,7 +292,10 @@ static int omap_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) static int omap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) { - u8 reg; + u8 reg, irqwake_reg = 0; + struct platform_device *pdev = to_platform_device(dev); + const struct platform_device_id *id_entry = + platform_get_device_id(pdev); if (tm2bcd(&alm->time) < 0) return -EINVAL; @@ -297,11 +311,19 @@ static int omap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) rtc_write(alm->time.tm_sec, OMAP_RTC_ALARM_SECONDS_REG); reg = rtc_read(OMAP_RTC_INTERRUPTS_REG); - if (alm->enabled) + if (id_entry->driver_data & OMAP_RTC_HAS_IRQWAKEEN) + irqwake_reg = rtc_read(OMAP_RTC_IRQWAKEEN); + + if (alm->enabled) { reg |= OMAP_RTC_INTERRUPTS_IT_ALARM; - else + irqwake_reg |= OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN; + } else { reg &= ~OMAP_RTC_INTERRUPTS_IT_ALARM; + irqwake_reg &= ~OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN; + } rtc_write(reg, OMAP_RTC_INTERRUPTS_REG); + if (id_entry->driver_data & OMAP_RTC_HAS_IRQWAKEEN) + rtc_write(irqwake_reg, OMAP_RTC_IRQWAKEEN); local_irq_enable(); @@ -503,28 +525,16 @@ static u8 irqstat; static int omap_rtc_suspend(struct device *dev) { - u8 irqwake_stat; - struct platform_device *pdev = to_platform_device(dev); - const struct platform_device_id *id_entry = - platform_get_device_id(pdev); - irqstat = rtc_read(OMAP_RTC_INTERRUPTS_REG); /* FIXME the RTC alarm is not currently acting as a wakeup event * source on some platforms, and in fact this enable() call is just * saving a flag that's never used... */ - if (device_may_wakeup(dev)) { + if (device_may_wakeup(dev)) enable_irq_wake(omap_rtc_alarm); - - if (id_entry->driver_data & OMAP_RTC_HAS_IRQWAKEEN) { - irqwake_stat = rtc_read(OMAP_RTC_IRQWAKEEN); - irqwake_stat |= OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN; - rtc_write(irqwake_stat, OMAP_RTC_IRQWAKEEN); - } - } else { + else rtc_write(0, OMAP_RTC_INTERRUPTS_REG); - } /* Disable the clock/module */ pm_runtime_put_sync(dev); @@ -534,25 +544,14 @@ static int omap_rtc_suspend(struct device *dev) static int omap_rtc_resume(struct device *dev) { - u8 irqwake_stat; - struct platform_device *pdev = to_platform_device(dev); - const struct platform_device_id *id_entry = - platform_get_device_id(pdev); - /* Enable the clock/module so that we can access the registers */ pm_runtime_get_sync(dev); - if (device_may_wakeup(dev)) { + if (device_may_wakeup(dev)) disable_irq_wake(omap_rtc_alarm); - - if (id_entry->driver_data & OMAP_RTC_HAS_IRQWAKEEN) { - irqwake_stat = rtc_read(OMAP_RTC_IRQWAKEEN); - irqwake_stat &= ~OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN; - rtc_write(irqwake_stat, OMAP_RTC_IRQWAKEEN); - } - } else { + else rtc_write(irqstat, OMAP_RTC_INTERRUPTS_REG); - } + return 0; } #endif -- cgit v1.2.3 From dee21a6faf4bbde372e2159f2699589a3eddb5a8 Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Fri, 6 Jun 2014 14:36:13 -0700 Subject: drivers/rtc/rtc-sa1100.c: make of_device_id array const Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-sa1100.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c index 0f7adeb1944a..b6e1ca08c2c0 100644 --- a/drivers/rtc/rtc-sa1100.c +++ b/drivers/rtc/rtc-sa1100.c @@ -338,7 +338,7 @@ static SIMPLE_DEV_PM_OPS(sa1100_rtc_pm_ops, sa1100_rtc_suspend, sa1100_rtc_resume); #ifdef CONFIG_OF -static struct of_device_id sa1100_rtc_dt_ids[] = { +static const struct of_device_id sa1100_rtc_dt_ids[] = { { .compatible = "mrvl,sa1100-rtc", }, { .compatible = "mrvl,mmp-rtc", }, {} -- cgit v1.2.3 From 8b18daa1bc7ed8a7a06df77de9c4a37e842e83b2 Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Fri, 6 Jun 2014 14:36:14 -0700 Subject: drivers/rtc/rtc-pxa.c: make of_device_id array const Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-pxa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-pxa.c b/drivers/rtc/rtc-pxa.c index cccbf9d89729..4561f375327d 100644 --- a/drivers/rtc/rtc-pxa.c +++ b/drivers/rtc/rtc-pxa.c @@ -389,7 +389,7 @@ static int __exit pxa_rtc_remove(struct platform_device *pdev) } #ifdef CONFIG_OF -static struct of_device_id pxa_rtc_dt_ids[] = { +static const struct of_device_id pxa_rtc_dt_ids[] = { { .compatible = "marvell,pxa-rtc" }, {} }; -- cgit v1.2.3 From 39d7a29f867bd5a4a551fad6bb3812ceddb0bce1 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:15 -0700 Subject: fs/befs/linuxvfs.c: replace strncpy by strlcpy strncpy + end of string assignment replaced by strlcpy Signed-off-by: Fabian Frederick Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/befs/linuxvfs.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index d626756ff721..1e27cd33f7f2 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -396,9 +396,8 @@ static struct inode *befs_iget(struct super_block *sb, unsigned long ino) if (S_ISLNK(inode->i_mode) && !(befs_ino->i_flags & BEFS_LONG_SYMLINK)){ inode->i_size = 0; inode->i_blocks = befs_sb->block_size / VFS_BLOCK_SIZE; - strncpy(befs_ino->i_data.symlink, raw_inode->data.symlink, - BEFS_SYMLINK_LEN - 1); - befs_ino->i_data.symlink[BEFS_SYMLINK_LEN - 1] = '\0'; + strlcpy(befs_ino->i_data.symlink, raw_inode->data.symlink, + BEFS_SYMLINK_LEN); } else { int num_blks; -- cgit v1.2.3 From 6cb103b6f45ac0cf3b948457342e5cdcdaf49adc Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:15 -0700 Subject: fs/befs/btree.c: replace strncpy by strlcpy + coding style fixing - strncpy + end of string assignement replaced by strlcpy - Fix endif }; - Fix typo Signed-off-by: Fabian Frederick Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/befs/btree.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/fs/befs/btree.c b/fs/befs/btree.c index a2cd305a993a..9d7d00e04858 100644 --- a/fs/befs/btree.c +++ b/fs/befs/btree.c @@ -405,7 +405,7 @@ befs_find_key(struct super_block *sb, befs_btree_node * node, * Heres how it works: Key_no is the index of the key/value pair to * return in keybuf/value. * Bufsize is the size of keybuf (BEFS_NAME_LEN+1 is a good size). Keysize is - * the number of charecters in the key (just a convenience). + * the number of characters in the key (just a convenience). * * Algorithm: * Get the first leafnode of the tree. See if the requested key is in that @@ -502,12 +502,11 @@ befs_btree_read(struct super_block *sb, befs_data_stream * ds, "for key of size %d", __func__, bufsize, keylen); brelse(this_node->bh); goto error_alloc; - }; + } - strncpy(keybuf, keystart, keylen); + strlcpy(keybuf, keystart, keylen + 1); *value = fs64_to_cpu(sb, valarray[cur_key]); *keysize = keylen; - keybuf[keylen] = '\0'; befs_debug(sb, "Read [%llu,%d]: Key \"%.*s\", Value %llu", node_off, cur_key, keylen, keybuf, *value); -- cgit v1.2.3 From f38f41c31b4596476f444d5419f8a7f1194c0840 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:16 -0700 Subject: fs/befs/linuxvfs.c: remove positive test on sector_t sector_t is unsigned. Signed-off-by: Fabian Frederick Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/befs/linuxvfs.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index 1e27cd33f7f2..ab3f6e171ea9 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -133,14 +133,6 @@ befs_get_block(struct inode *inode, sector_t block, befs_debug(sb, "---> befs_get_block() for inode %lu, block %ld", (unsigned long)inode->i_ino, (long)block); - - if (block < 0) { - befs_error(sb, "befs_get_block() was asked for a block " - "number less than zero: block %ld in inode %lu", - (long)block, (unsigned long)inode->i_ino); - return -EIO; - } - if (create) { befs_error(sb, "befs_get_block() was asked to write to " "block %ld in inode %lu", (long)block, -- cgit v1.2.3 From 817e1d902aca6ab8a0b54691f4fea3ee3aebbe86 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:17 -0700 Subject: fs/befs: kernel-doc fixes Fix some comment errors. Signed-off-by: Fabian Frederick Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/befs/btree.c | 4 ++-- fs/befs/datastream.c | 2 +- fs/befs/linuxvfs.c | 16 ++++++++-------- 3 files changed, 11 insertions(+), 11 deletions(-) diff --git a/fs/befs/btree.c b/fs/befs/btree.c index 9d7d00e04858..9c7faa8a9288 100644 --- a/fs/befs/btree.c +++ b/fs/befs/btree.c @@ -318,7 +318,7 @@ befs_btree_find(struct super_block *sb, befs_data_stream * ds, * befs_find_key - Search for a key within a node * @sb: Filesystem superblock * @node: Node to find the key within - * @key: Keystring to search for + * @findkey: Keystring to search for * @value: If key is found, the value stored with the key is put here * * finds exact match if one exists, and returns BEFS_BT_MATCH @@ -706,7 +706,7 @@ befs_bt_get_key(struct super_block *sb, befs_btree_node * node, * @key1: pointer to the first key to be compared * @keylen1: length in bytes of key1 * @key2: pointer to the second key to be compared - * @kelen2: length in bytes of key2 + * @keylen2: length in bytes of key2 * * Returns 0 if @key1 and @key2 are equal. * Returns >0 if @key1 is greater. diff --git a/fs/befs/datastream.c b/fs/befs/datastream.c index c467bebd50af..1e8e0b8d8836 100644 --- a/fs/befs/datastream.c +++ b/fs/befs/datastream.c @@ -116,7 +116,7 @@ befs_fblock2brun(struct super_block *sb, befs_data_stream * data, * befs_read_lsmylink - read long symlink from datastream. * @sb: Filesystem superblock * @ds: Datastrem to read from - * @buf: Buffer in which to place long symlink data + * @buff: Buffer in which to place long symlink data * @len: Length of the long symlink in bytes * * Returns the number of bytes read diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index ab3f6e171ea9..a16fbd4e8241 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -582,21 +582,21 @@ befs_utf2nls(struct super_block *sb, const char *in, /** * befs_nls2utf - Convert NLS string to utf8 encodeing * @sb: Superblock - * @src: Input string buffer in NLS format - * @srclen: Length of input string in bytes - * @dest: The output string in UTF-8 format - * @destlen: Length of the output buffer + * @in: Input string buffer in NLS format + * @in_len: Length of input string in bytes + * @out: The output string in UTF-8 format + * @out_len: Length of the output buffer * - * Converts input string @src, which is in the format of the loaded NLS map, + * Converts input string @in, which is in the format of the loaded NLS map, * into a utf8 string. * - * The destination string @dest is allocated by this function and the caller is + * The destination string @out is allocated by this function and the caller is * responsible for freeing it with kfree() * - * On return, *@destlen is the length of @dest in bytes. + * On return, *@out_len is the length of @out in bytes. * * On success, the return value is the number of utf8 characters written to - * the output buffer @dest. + * the output buffer @out. * * On Failure, a negative number coresponding to the error code is returned. */ -- cgit v1.2.3 From d9b4b3195a06e646c357f6108a424569b1a920d9 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:18 -0700 Subject: fs/coda: replace printk by pr_foo() No level printk converted to pr_warn or pr_info Signed-off-by: Fabian Frederick Cc: Jan Harkes Cc: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/coda/cnode.c | 4 ++-- fs/coda/coda_linux.h | 2 +- fs/coda/dir.c | 12 ++++++------ fs/coda/inode.c | 29 +++++++++++++++-------------- fs/coda/psdev.c | 34 +++++++++++++++++----------------- fs/coda/upcall.c | 14 +++++++------- 6 files changed, 48 insertions(+), 47 deletions(-) diff --git a/fs/coda/cnode.c b/fs/coda/cnode.c index 911cf30d057d..4bb74b3d3901 100644 --- a/fs/coda/cnode.c +++ b/fs/coda/cnode.c @@ -101,7 +101,7 @@ struct inode *coda_cnode_make(struct CodaFid *fid, struct super_block *sb) inode = coda_iget(sb, fid, &attr); if (IS_ERR(inode)) - printk("coda_cnode_make: coda_iget failed\n"); + pr_warn("coda_cnode_make: coda_iget failed\n"); return inode; } @@ -137,7 +137,7 @@ struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb) unsigned long hash = coda_f2i(fid); if ( !sb ) { - printk("coda_fid_to_inode: no sb!\n"); + pr_warn("coda_fid_to_inode: no sb!\n"); return NULL; } diff --git a/fs/coda/coda_linux.h b/fs/coda/coda_linux.h index e7550cb9fb74..a3bf7a873ad2 100644 --- a/fs/coda/coda_linux.h +++ b/fs/coda/coda_linux.h @@ -63,7 +63,7 @@ void coda_sysctl_clean(void); else \ ptr = (cast)vzalloc((unsigned long) size); \ if (!ptr) \ - printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \ + pr_warn("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \ } while (0) diff --git a/fs/coda/dir.c b/fs/coda/dir.c index 5efbb5ee0adc..bdd34df79c88 100644 --- a/fs/coda/dir.c +++ b/fs/coda/dir.c @@ -102,7 +102,7 @@ static struct dentry *coda_lookup(struct inode *dir, struct dentry *entry, unsig int type = 0; if (length > CODA_MAXNAMLEN) { - printk(KERN_ERR "name too long: lookup, %s (%*s)\n", + pr_err("name too long: lookup, %s (%*s)\n", coda_i2s(dir), (int)length, name); return ERR_PTR(-ENAMETOOLONG); } @@ -453,7 +453,7 @@ static int coda_venus_readdir(struct file *coda_file, struct dir_context *ctx) ret = kernel_read(host_file, ctx->pos - 2, (char *)vdir, sizeof(*vdir)); if (ret < 0) { - printk(KERN_ERR "coda readdir: read dir %s failed %d\n", + pr_err("coda readdir: read dir %s failed %d\n", coda_f2s(&cii->c_fid), ret); break; } @@ -461,14 +461,14 @@ static int coda_venus_readdir(struct file *coda_file, struct dir_context *ctx) /* catch truncated reads */ if (ret < vdir_size || ret < vdir_size + vdir->d_namlen) { - printk(KERN_ERR "coda readdir: short read on %s\n", + pr_err("coda readdir: short read on %s\n", coda_f2s(&cii->c_fid)); ret = -EBADF; break; } /* validate whether the directory file actually makes sense */ if (vdir->d_reclen < vdir_size + vdir->d_namlen) { - printk(KERN_ERR "coda readdir: invalid dir %s\n", + pr_err("coda readdir: invalid dir %s\n", coda_f2s(&cii->c_fid)); ret = -EBADF; break; @@ -589,8 +589,8 @@ int coda_revalidate_inode(struct inode *inode) coda_vattr_to_iattr(inode, &attr); if ((old_mode & S_IFMT) != (inode->i_mode & S_IFMT)) { - printk("Coda: inode %ld, fid %s changed type!\n", - inode->i_ino, coda_f2s(&(cii->c_fid))); + pr_warn("Coda: inode %ld, fid %s changed type!\n", + inode->i_ino, coda_f2s(&(cii->c_fid))); } /* the following can happen when a local fid is replaced diff --git a/fs/coda/inode.c b/fs/coda/inode.c index d9c7751f10ac..b87d49fea623 100644 --- a/fs/coda/inode.c +++ b/fs/coda/inode.c @@ -119,12 +119,12 @@ static int get_device_index(struct coda_mount_data *data) int idx; if (data == NULL) { - printk("coda_read_super: Bad mount data\n"); + pr_warn("coda_read_super: Bad mount data\n"); return -1; } if (data->version != CODA_MOUNT_VERSION) { - printk("coda_read_super: Bad mount version\n"); + pr_warn("coda_read_super: Bad mount version\n"); return -1; } @@ -141,13 +141,13 @@ static int get_device_index(struct coda_mount_data *data) fdput(f); if (idx < 0 || idx >= MAX_CODADEVS) { - printk("coda_read_super: Bad minor number\n"); + pr_warn("coda_read_super: Bad minor number\n"); return -1; } return idx; Ebadf: - printk("coda_read_super: Bad file\n"); + pr_warn("coda_read_super: Bad file\n"); return -1; } @@ -168,19 +168,19 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent) if(idx == -1) idx = 0; - printk(KERN_INFO "coda_read_super: device index: %i\n", idx); + pr_info("coda_read_super: device index: %i\n", idx); vc = &coda_comms[idx]; mutex_lock(&vc->vc_mutex); if (!vc->vc_inuse) { - printk("coda_read_super: No pseudo device\n"); + pr_warn("coda_read_super: No pseudo device\n"); error = -EINVAL; goto unlock_out; } if (vc->vc_sb) { - printk("coda_read_super: Device already mounted\n"); + pr_warn("coda_read_super: Device already mounted\n"); error = -EBUSY; goto unlock_out; } @@ -204,22 +204,23 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent) /* get root fid from Venus: this needs the root inode */ error = venus_rootfid(sb, &fid); if ( error ) { - printk("coda_read_super: coda_get_rootfid failed with %d\n", - error); + pr_warn("coda_read_super: coda_get_rootfid failed with %d\n", + error); goto error; } - printk("coda_read_super: rootfid is %s\n", coda_f2s(&fid)); + pr_info("coda_read_super: rootfid is %s\n", coda_f2s(&fid)); /* make root inode */ root = coda_cnode_make(&fid, sb); if (IS_ERR(root)) { error = PTR_ERR(root); - printk("Failure of coda_cnode_make for root: error %d\n", error); + pr_warn("Failure of coda_cnode_make for root: error %d\n", + error); goto error; } - printk("coda_read_super: rootinode is %ld dev %s\n", - root->i_ino, root->i_sb->s_id); + pr_info("coda_read_super: rootinode is %ld dev %s\n", + root->i_ino, root->i_sb->s_id); sb->s_root = d_make_root(root); if (!sb->s_root) { error = -EINVAL; @@ -246,7 +247,7 @@ static void coda_put_super(struct super_block *sb) sb->s_fs_info = NULL; mutex_unlock(&vcp->vc_mutex); - printk("Coda: Bye bye.\n"); + pr_info("Coda: Bye bye.\n"); } static void coda_evict_inode(struct inode *inode) diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c index ebc2bae6c289..accddf6e2718 100644 --- a/fs/coda/psdev.c +++ b/fs/coda/psdev.c @@ -114,14 +114,14 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf, int size = sizeof(*dcbuf); if ( nbytes < sizeof(struct coda_out_hdr) ) { - printk("coda_downcall opc %d uniq %d, not enough!\n", - hdr.opcode, hdr.unique); + pr_warn("coda_downcall opc %d uniq %d, not enough!\n", + hdr.opcode, hdr.unique); count = nbytes; goto out; } if ( nbytes > size ) { - printk("Coda: downcall opc %d, uniq %d, too much!", - hdr.opcode, hdr.unique); + pr_warn("Coda: downcall opc %d, uniq %d, too much!", + hdr.opcode, hdr.unique); nbytes = size; } CODA_ALLOC(dcbuf, union outputArgs *, nbytes); @@ -136,7 +136,8 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf, CODA_FREE(dcbuf, nbytes); if (error) { - printk("psdev_write: coda_downcall error: %d\n", error); + pr_warn("psdev_write: coda_downcall error: %d\n", + error); retval = error; goto out; } @@ -157,7 +158,7 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf, mutex_unlock(&vcp->vc_mutex); if (!req) { - printk("psdev_write: msg (%d, %d) not found\n", + pr_warn("psdev_write: msg (%d, %d) not found\n", hdr.opcode, hdr.unique); retval = -ESRCH; goto out; @@ -165,8 +166,8 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf, /* move data into response buffer. */ if (req->uc_outSize < nbytes) { - printk("psdev_write: too much cnt: %d, cnt: %ld, opc: %d, uniq: %d.\n", - req->uc_outSize, (long)nbytes, hdr.opcode, hdr.unique); + pr_warn("psdev_write: too much cnt: %d, cnt: %ld, opc: %d, uniq: %d.\n", + req->uc_outSize, (long)nbytes, hdr.opcode, hdr.unique); nbytes = req->uc_outSize; /* don't have more space! */ } if (copy_from_user(req->uc_data, buf, nbytes)) { @@ -240,7 +241,7 @@ static ssize_t coda_psdev_read(struct file * file, char __user * buf, /* Move the input args into userspace */ count = req->uc_inSize; if (nbytes < req->uc_inSize) { - printk ("psdev_read: Venus read %ld bytes of %d in message\n", + pr_warn("psdev_read: Venus read %ld bytes of %d in message\n", (long)nbytes, req->uc_inSize); count = nbytes; } @@ -305,7 +306,7 @@ static int coda_psdev_release(struct inode * inode, struct file * file) struct upc_req *req, *tmp; if (!vcp || !vcp->vc_inuse ) { - printk("psdev_release: Not open.\n"); + pr_warn("psdev_release: Not open.\n"); return -1; } @@ -354,8 +355,8 @@ static int init_coda_psdev(void) { int i, err = 0; if (register_chrdev(CODA_PSDEV_MAJOR, "coda", &coda_psdev_fops)) { - printk(KERN_ERR "coda_psdev: unable to get major %d\n", - CODA_PSDEV_MAJOR); + pr_err("coda_psdev: unable to get major %d\n", + CODA_PSDEV_MAJOR); return -EIO; } coda_psdev_class = class_create(THIS_MODULE, "coda"); @@ -393,13 +394,13 @@ static int __init init_coda(void) goto out2; status = init_coda_psdev(); if ( status ) { - printk("Problem (%d) in init_coda_psdev\n", status); + pr_warn("Problem (%d) in init_coda_psdev\n", status); goto out1; } status = register_filesystem(&coda_fs_type); if (status) { - printk("coda: failed to register filesystem!\n"); + pr_warn("coda: failed to register filesystem!\n"); goto out; } return 0; @@ -420,9 +421,8 @@ static void __exit exit_coda(void) int err, i; err = unregister_filesystem(&coda_fs_type); - if ( err != 0 ) { - printk("coda: failed to unregister filesystem\n"); - } + if (err != 0) + pr_warn("coda: failed to unregister filesystem\n"); for (i = 0; i < MAX_CODADEVS; i++) device_destroy(coda_psdev_class, MKDEV(CODA_PSDEV_MAJOR, i)); class_destroy(coda_psdev_class); diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c index 3a731976dc5e..5f3b21714c59 100644 --- a/fs/coda/upcall.c +++ b/fs/coda/upcall.c @@ -508,8 +508,8 @@ int venus_pioctl(struct super_block *sb, struct CodaFid *fid, inp->coda_ioctl.data = (char *)(INSIZE(ioctl)); /* get the data out of user space */ - if ( copy_from_user((char*)inp + (long)inp->coda_ioctl.data, - data->vi.in, data->vi.in_size) ) { + if (copy_from_user((char *)inp + (long)inp->coda_ioctl.data, + data->vi.in, data->vi.in_size)) { error = -EINVAL; goto exit; } @@ -518,8 +518,8 @@ int venus_pioctl(struct super_block *sb, struct CodaFid *fid, &outsize, inp); if (error) { - printk("coda_pioctl: Venus returns: %d for %s\n", - error, coda_f2s(fid)); + pr_warn("coda_pioctl: Venus returns: %d for %s\n", + error, coda_f2s(fid)); goto exit; } @@ -675,7 +675,7 @@ static int coda_upcall(struct venus_comm *vcp, mutex_lock(&vcp->vc_mutex); if (!vcp->vc_inuse) { - printk(KERN_NOTICE "coda: Venus dead, not sending upcall\n"); + pr_notice("coda: Venus dead, not sending upcall\n"); error = -ENXIO; goto exit; } @@ -725,7 +725,7 @@ static int coda_upcall(struct venus_comm *vcp, error = -EINTR; if ((req->uc_flags & CODA_REQ_ABORT) || !signal_pending(current)) { - printk(KERN_WARNING "coda: Unexpected interruption.\n"); + pr_warn("coda: Unexpected interruption.\n"); goto exit; } @@ -735,7 +735,7 @@ static int coda_upcall(struct venus_comm *vcp, /* Venus saw the upcall, make sure we can send interrupt signal */ if (!vcp->vc_inuse) { - printk(KERN_INFO "coda: Venus dead, not sending signal.\n"); + pr_info("coda: Venus dead, not sending signal.\n"); goto exit; } -- cgit v1.2.3 From f38cfb2564f5fead53eebd9617258ee0376b1906 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:19 -0700 Subject: fs/coda: logging prefix uniformization - Add pr_fmt based on module name. - Remove Coda: coda: from pr_foo() Signed-off-by: Fabian Frederick Cc: Jan Harkes Cc: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/coda/coda_linux.h | 6 ++++++ fs/coda/dir.c | 2 +- fs/coda/inode.c | 2 +- fs/coda/psdev.c | 6 +++--- fs/coda/upcall.c | 6 +++--- 5 files changed, 14 insertions(+), 8 deletions(-) diff --git a/fs/coda/coda_linux.h b/fs/coda/coda_linux.h index a3bf7a873ad2..d42b725b1d21 100644 --- a/fs/coda/coda_linux.h +++ b/fs/coda/coda_linux.h @@ -12,6 +12,12 @@ #ifndef _LINUX_CODA_FS #define _LINUX_CODA_FS +#ifdef pr_fmt +#undef pr_fmt +#endif + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include #include #include diff --git a/fs/coda/dir.c b/fs/coda/dir.c index bdd34df79c88..cf2735c2ba6f 100644 --- a/fs/coda/dir.c +++ b/fs/coda/dir.c @@ -589,7 +589,7 @@ int coda_revalidate_inode(struct inode *inode) coda_vattr_to_iattr(inode, &attr); if ((old_mode & S_IFMT) != (inode->i_mode & S_IFMT)) { - pr_warn("Coda: inode %ld, fid %s changed type!\n", + pr_warn("inode %ld, fid %s changed type!\n", inode->i_ino, coda_f2s(&(cii->c_fid))); } diff --git a/fs/coda/inode.c b/fs/coda/inode.c index b87d49fea623..b5ee5903c7f7 100644 --- a/fs/coda/inode.c +++ b/fs/coda/inode.c @@ -247,7 +247,7 @@ static void coda_put_super(struct super_block *sb) sb->s_fs_info = NULL; mutex_unlock(&vcp->vc_mutex); - pr_info("Coda: Bye bye.\n"); + pr_info("Bye bye.\n"); } static void coda_evict_inode(struct inode *inode) diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c index accddf6e2718..39ebb148d0d8 100644 --- a/fs/coda/psdev.c +++ b/fs/coda/psdev.c @@ -120,7 +120,7 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf, goto out; } if ( nbytes > size ) { - pr_warn("Coda: downcall opc %d, uniq %d, too much!", + pr_warn("downcall opc %d, uniq %d, too much!", hdr.opcode, hdr.unique); nbytes = size; } @@ -400,7 +400,7 @@ static int __init init_coda(void) status = register_filesystem(&coda_fs_type); if (status) { - pr_warn("coda: failed to register filesystem!\n"); + pr_warn("failed to register filesystem!\n"); goto out; } return 0; @@ -422,7 +422,7 @@ static void __exit exit_coda(void) err = unregister_filesystem(&coda_fs_type); if (err != 0) - pr_warn("coda: failed to unregister filesystem\n"); + pr_warn("failed to unregister filesystem\n"); for (i = 0; i < MAX_CODADEVS; i++) device_destroy(coda_psdev_class, MKDEV(CODA_PSDEV_MAJOR, i)); class_destroy(coda_psdev_class); diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c index 5f3b21714c59..0780de514bf2 100644 --- a/fs/coda/upcall.c +++ b/fs/coda/upcall.c @@ -675,7 +675,7 @@ static int coda_upcall(struct venus_comm *vcp, mutex_lock(&vcp->vc_mutex); if (!vcp->vc_inuse) { - pr_notice("coda: Venus dead, not sending upcall\n"); + pr_notice("Venus dead, not sending upcall\n"); error = -ENXIO; goto exit; } @@ -725,7 +725,7 @@ static int coda_upcall(struct venus_comm *vcp, error = -EINTR; if ((req->uc_flags & CODA_REQ_ABORT) || !signal_pending(current)) { - pr_warn("coda: Unexpected interruption.\n"); + pr_warn("Unexpected interruption.\n"); goto exit; } @@ -735,7 +735,7 @@ static int coda_upcall(struct venus_comm *vcp, /* Venus saw the upcall, make sure we can send interrupt signal */ if (!vcp->vc_inuse) { - pr_info("coda: Venus dead, not sending signal.\n"); + pr_info("Venus dead, not sending signal.\n"); goto exit; } -- cgit v1.2.3 From 6d6bd94f4d83d70cdff67d0bf2a64ef6878216e7 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:20 -0700 Subject: fs/coda: use __func__ Replace all function names by __func__ in pr_foo() Signed-off-by: Fabian Frederick Cc: Jan Harkes Cc: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/coda/cnode.c | 4 ++-- fs/coda/dir.c | 12 ++++++------ fs/coda/inode.c | 24 ++++++++++++------------ fs/coda/psdev.c | 23 ++++++++++++----------- fs/coda/upcall.c | 4 ++-- 5 files changed, 34 insertions(+), 33 deletions(-) diff --git a/fs/coda/cnode.c b/fs/coda/cnode.c index 4bb74b3d3901..7740b1c871c1 100644 --- a/fs/coda/cnode.c +++ b/fs/coda/cnode.c @@ -101,7 +101,7 @@ struct inode *coda_cnode_make(struct CodaFid *fid, struct super_block *sb) inode = coda_iget(sb, fid, &attr); if (IS_ERR(inode)) - pr_warn("coda_cnode_make: coda_iget failed\n"); + pr_warn("%s: coda_iget failed\n", __func__); return inode; } @@ -137,7 +137,7 @@ struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb) unsigned long hash = coda_f2i(fid); if ( !sb ) { - pr_warn("coda_fid_to_inode: no sb!\n"); + pr_warn("%s: no sb!\n", __func__); return NULL; } diff --git a/fs/coda/dir.c b/fs/coda/dir.c index cf2735c2ba6f..cd8a63238b11 100644 --- a/fs/coda/dir.c +++ b/fs/coda/dir.c @@ -453,23 +453,23 @@ static int coda_venus_readdir(struct file *coda_file, struct dir_context *ctx) ret = kernel_read(host_file, ctx->pos - 2, (char *)vdir, sizeof(*vdir)); if (ret < 0) { - pr_err("coda readdir: read dir %s failed %d\n", - coda_f2s(&cii->c_fid), ret); + pr_err("%s: read dir %s failed %d\n", + __func__, coda_f2s(&cii->c_fid), ret); break; } if (ret == 0) break; /* end of directory file reached */ /* catch truncated reads */ if (ret < vdir_size || ret < vdir_size + vdir->d_namlen) { - pr_err("coda readdir: short read on %s\n", - coda_f2s(&cii->c_fid)); + pr_err("%s: short read on %s\n", + __func__, coda_f2s(&cii->c_fid)); ret = -EBADF; break; } /* validate whether the directory file actually makes sense */ if (vdir->d_reclen < vdir_size + vdir->d_namlen) { - pr_err("coda readdir: invalid dir %s\n", - coda_f2s(&cii->c_fid)); + pr_err("%s: invalid dir %s\n", + __func__, coda_f2s(&cii->c_fid)); ret = -EBADF; break; } diff --git a/fs/coda/inode.c b/fs/coda/inode.c index b5ee5903c7f7..fe3afb2de880 100644 --- a/fs/coda/inode.c +++ b/fs/coda/inode.c @@ -119,12 +119,12 @@ static int get_device_index(struct coda_mount_data *data) int idx; if (data == NULL) { - pr_warn("coda_read_super: Bad mount data\n"); + pr_warn("%s: Bad mount data\n", __func__); return -1; } if (data->version != CODA_MOUNT_VERSION) { - pr_warn("coda_read_super: Bad mount version\n"); + pr_warn("%s: Bad mount version\n", __func__); return -1; } @@ -141,13 +141,13 @@ static int get_device_index(struct coda_mount_data *data) fdput(f); if (idx < 0 || idx >= MAX_CODADEVS) { - pr_warn("coda_read_super: Bad minor number\n"); + pr_warn("%s: Bad minor number\n", __func__); return -1; } return idx; Ebadf: - pr_warn("coda_read_super: Bad file\n"); + pr_warn("%s: Bad file\n", __func__); return -1; } @@ -168,19 +168,19 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent) if(idx == -1) idx = 0; - pr_info("coda_read_super: device index: %i\n", idx); + pr_info("%s: device index: %i\n", __func__, idx); vc = &coda_comms[idx]; mutex_lock(&vc->vc_mutex); if (!vc->vc_inuse) { - pr_warn("coda_read_super: No pseudo device\n"); + pr_warn("%s: No pseudo device\n", __func__); error = -EINVAL; goto unlock_out; } if (vc->vc_sb) { - pr_warn("coda_read_super: Device already mounted\n"); + pr_warn("%s: Device already mounted\n", __func__); error = -EBUSY; goto unlock_out; } @@ -204,11 +204,11 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent) /* get root fid from Venus: this needs the root inode */ error = venus_rootfid(sb, &fid); if ( error ) { - pr_warn("coda_read_super: coda_get_rootfid failed with %d\n", - error); + pr_warn("%s: coda_get_rootfid failed with %d\n", + __func__, error); goto error; } - pr_info("coda_read_super: rootfid is %s\n", coda_f2s(&fid)); + pr_info("%s: rootfid is %s\n", __func__, coda_f2s(&fid)); /* make root inode */ root = coda_cnode_make(&fid, sb); @@ -219,8 +219,8 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent) goto error; } - pr_info("coda_read_super: rootinode is %ld dev %s\n", - root->i_ino, root->i_sb->s_id); + pr_info("%s: rootinode is %ld dev %s\n", + __func__, root->i_ino, root->i_sb->s_id); sb->s_root = d_make_root(root); if (!sb->s_root) { error = -EINVAL; diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c index 39ebb148d0d8..5c1e4242368b 100644 --- a/fs/coda/psdev.c +++ b/fs/coda/psdev.c @@ -136,8 +136,8 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf, CODA_FREE(dcbuf, nbytes); if (error) { - pr_warn("psdev_write: coda_downcall error: %d\n", - error); + pr_warn("%s: coda_downcall error: %d\n", + __func__, error); retval = error; goto out; } @@ -158,16 +158,17 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf, mutex_unlock(&vcp->vc_mutex); if (!req) { - pr_warn("psdev_write: msg (%d, %d) not found\n", - hdr.opcode, hdr.unique); + pr_warn("%s: msg (%d, %d) not found\n", + __func__, hdr.opcode, hdr.unique); retval = -ESRCH; goto out; } /* move data into response buffer. */ if (req->uc_outSize < nbytes) { - pr_warn("psdev_write: too much cnt: %d, cnt: %ld, opc: %d, uniq: %d.\n", - req->uc_outSize, (long)nbytes, hdr.opcode, hdr.unique); + pr_warn("%s: too much cnt: %d, cnt: %ld, opc: %d, uniq: %d.\n", + __func__, req->uc_outSize, (long)nbytes, + hdr.opcode, hdr.unique); nbytes = req->uc_outSize; /* don't have more space! */ } if (copy_from_user(req->uc_data, buf, nbytes)) { @@ -241,8 +242,8 @@ static ssize_t coda_psdev_read(struct file * file, char __user * buf, /* Move the input args into userspace */ count = req->uc_inSize; if (nbytes < req->uc_inSize) { - pr_warn("psdev_read: Venus read %ld bytes of %d in message\n", - (long)nbytes, req->uc_inSize); + pr_warn("%s: Venus read %ld bytes of %d in message\n", + __func__, (long)nbytes, req->uc_inSize); count = nbytes; } @@ -306,7 +307,7 @@ static int coda_psdev_release(struct inode * inode, struct file * file) struct upc_req *req, *tmp; if (!vcp || !vcp->vc_inuse ) { - pr_warn("psdev_release: Not open.\n"); + pr_warn("%s: Not open.\n", __func__); return -1; } @@ -355,8 +356,8 @@ static int init_coda_psdev(void) { int i, err = 0; if (register_chrdev(CODA_PSDEV_MAJOR, "coda", &coda_psdev_fops)) { - pr_err("coda_psdev: unable to get major %d\n", - CODA_PSDEV_MAJOR); + pr_err("%s: unable to get major %d\n", + __func__, CODA_PSDEV_MAJOR); return -EIO; } coda_psdev_class = class_create(THIS_MODULE, "coda"); diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c index 0780de514bf2..21fcf8dcb9cd 100644 --- a/fs/coda/upcall.c +++ b/fs/coda/upcall.c @@ -518,8 +518,8 @@ int venus_pioctl(struct super_block *sb, struct CodaFid *fid, &outsize, inp); if (error) { - pr_warn("coda_pioctl: Venus returns: %d for %s\n", - error, coda_f2s(fid)); + pr_warn("%s: Venus returns: %d for %s\n", + __func__, error, coda_f2s(fid)); goto exit; } -- cgit v1.2.3 From 017f8da43e92ddd9989884720b694a512e09ccce Mon Sep 17 00:00:00 2001 From: Hin-Tak Leung Date: Fri, 6 Jun 2014 14:36:21 -0700 Subject: hfsplus: fix worst-case unicode to char conversion of file names and attributes This is a series of 3 patches which corrects issues in HFS+ concerning the use of non-english file names and attributes. Names and attributes are stored internally as UTF-16 units up to a fixed maximum size, and convert to and from user-representation by NLS. The code incorrectly assume that NLS string lengths are equal to unicode lengths, which is only true for English ascii usage. This patch (of 3): The HFS Plus Volume Format specification (TN1150) states that file names are stored internally as a maximum of 255 unicode characters, as defined by The Unicode Standard, Version 2.0 [Unicode, Inc. ISBN 0-201-48345-9]. File names are converted by the NLS system on Linux before presented to the user. 255 CJK characters converts to UTF-8 with 1 unicode character to up to 3 bytes, and to GB18030 with 1 unicode character to up to 4 bytes. Thus, trying in a UTF-8 locale to list files with names of more than 85 CJK characters results in: $ ls /mnt ls: reading directory /mnt: File name too long The receiving buffer to hfsplus_uni2asc() needs to be 255 x NLS_MAX_CHARSET_SIZE bytes, not 255 bytes as the code has always been. Similar consideration applies to attributes, which are stored internally as a maximum of 127 UTF-16BE units. See XNU source for an up-to-date reference on attributes. Strictly speaking, the maximum value of NLS_MAX_CHARSET_SIZE = 6 is not attainable in the case of conversion to UTF-8, as going beyond 3 bytes requires the use of surrogate pairs, i.e. consuming two input units. Thanks Anton Altaparmakov for reviewing an earlier version of this change. This patch fixes all callers of hfsplus_uni2asc(), and also enables the use of long non-English file names in HFS+. The getting and setting, and general usage of long non-English attributes requires further forthcoming work, in the following patches of this series. [akpm@linux-foundation.org: fix build] Signed-off-by: Hin-Tak Leung Reviewed-by: Anton Altaparmakov Cc: Vyacheslav Dubeyko Cc: Al Viro Cc: Christoph Hellwig Cc: Sougata Santra Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hfsplus/dir.c | 11 +++++++++-- fs/hfsplus/xattr.c | 15 ++++++++++++--- 2 files changed, 21 insertions(+), 5 deletions(-) diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c index bdec66522de3..fb07d260e692 100644 --- a/fs/hfsplus/dir.c +++ b/fs/hfsplus/dir.c @@ -12,6 +12,7 @@ #include #include #include +#include #include "hfsplus_fs.h" #include "hfsplus_raw.h" @@ -127,7 +128,7 @@ static int hfsplus_readdir(struct file *file, struct dir_context *ctx) struct inode *inode = file_inode(file); struct super_block *sb = inode->i_sb; int len, err; - char strbuf[HFSPLUS_MAX_STRLEN + 1]; + char *strbuf; hfsplus_cat_entry entry; struct hfs_find_data fd; struct hfsplus_readdir_data *rd; @@ -139,6 +140,11 @@ static int hfsplus_readdir(struct file *file, struct dir_context *ctx) err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); if (err) return err; + strbuf = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_MAX_STRLEN + 1, GFP_KERNEL); + if (!strbuf) { + err = -ENOMEM; + goto out; + } hfsplus_cat_build_key(sb, fd.search_key, inode->i_ino, NULL); err = hfs_brec_find(&fd, hfs_find_rec_by_key); if (err) @@ -193,7 +199,7 @@ static int hfsplus_readdir(struct file *file, struct dir_context *ctx) hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength); type = be16_to_cpu(entry.type); - len = HFSPLUS_MAX_STRLEN; + len = NLS_MAX_CHARSET_SIZE * HFSPLUS_MAX_STRLEN; err = hfsplus_uni2asc(sb, &fd.key->cat.name, strbuf, &len); if (err) goto out; @@ -246,6 +252,7 @@ next: } memcpy(&rd->key, fd.key, sizeof(struct hfsplus_cat_key)); out: + kfree(strbuf); hfs_find_exit(&fd); return err; } diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c index 4e27edc082a4..e2b3c9ea1c71 100644 --- a/fs/hfsplus/xattr.c +++ b/fs/hfsplus/xattr.c @@ -8,6 +8,7 @@ #include "hfsplus_fs.h" #include +#include #include "xattr.h" #include "acl.h" @@ -645,8 +646,7 @@ ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size) struct hfs_find_data fd; u16 key_len = 0; struct hfsplus_attr_key attr_key; - char strbuf[HFSPLUS_ATTR_MAX_STRLEN + - XATTR_MAC_OSX_PREFIX_LEN + 1] = {0}; + char *strbuf; int xattr_name_len; if ((!S_ISREG(inode->i_mode) && @@ -666,6 +666,13 @@ ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size) return err; } + strbuf = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + + XATTR_MAC_OSX_PREFIX_LEN + 1, GFP_KERNEL); + if (!strbuf) { + res = -ENOMEM; + goto out; + } + err = hfsplus_find_attr(inode->i_sb, inode->i_ino, NULL, &fd); if (err) { if (err == -ENOENT) { @@ -692,7 +699,7 @@ ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size) if (be32_to_cpu(attr_key.cnid) != inode->i_ino) goto end_listxattr; - xattr_name_len = HFSPLUS_ATTR_MAX_STRLEN; + xattr_name_len = NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN; if (hfsplus_uni2asc(inode->i_sb, (const struct hfsplus_unistr *)&fd.key->attr.key_name, strbuf, &xattr_name_len)) { @@ -718,6 +725,8 @@ ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size) } end_listxattr: + kfree(strbuf); +out: hfs_find_exit(&fd); return res; } -- cgit v1.2.3 From bf29e886b242cebf6a96ca0e43873abc777e0b50 Mon Sep 17 00:00:00 2001 From: Hin-Tak Leung Date: Fri, 6 Jun 2014 14:36:22 -0700 Subject: hfsplus: correct usage of HFSPLUS_ATTR_MAX_STRLEN for non-English attributes HFSPLUS_ATTR_MAX_STRLEN (=127) is the limit of attribute names for the number of unicode character (UTF-16BE) storable in the HFS+ file system. Almost all the current usage of it is wrong, in relation to NLS to on-disk conversion. Except for one use calling hfsplus_asc2uni (which should stay the same) and its uses in calling hfsplus_uni2asc (which was corrected in the earlier patch in this series concerning usage of hfsplus_uni2asc), all the other uses are of the forms: - char buffer[size] - bound check: "if (namespace_adjusted_input_length > size) return failure;" Conversion between on-disk unicode representation and NLS char strings (in whichever direction) always needs to accommodate the worst-case NLS conversion, so all char buffers of that size need to have a NLS_MAX_CHARSET_SIZE x . The bound checks are all wrong, since they compare nls_length derived from strlen() to a unicode length limit. It turns out that all the bound-checks do is to protect hfsplus_asc2uni(), which can fail if the input is too large. There is only one usage of it as far as attributes are concerned, in hfsplus_attr_build_key(). It is in turn used by hfsplus_find_attr(), hfsplus_create_attr(), hfsplus_delete_attr(). Thus making sure that errors from hfsplus_asc2uni() is caught in hfsplus_attr_build_key() and propagated is sufficient to replace all the bound checks. Unpropagated errors from hfsplus_asc2uni() in the file catalog code was addressed recently in an independent patch "hfsplus: fix longname handling" by Sougata Santra. Before this patch, trying to set a 55 CJK character (in a UTF-8 locale, > 127/3=42) attribute plus user prefix fails with: $ setfattr -n user.`cat testing-string` -v `cat testing-string` \ testing-string setfattr: testing-string: Operation not supported and retrieving a stored long attributes is particular ugly(!): find /mnt/* -type f -exec getfattr -d {} \; getfattr: /mnt/testing-string: Input/output error with console log: [268008.389781] hfsplus: unicode conversion failed After the patch, both of the above works. FYI, the test attribute string is prepared with: echo -e -n \ "\xe9\x80\x99\xe6\x98\xaf\xe4\xb8\x80\xe5\x80\x8b\xe9\x9d\x9e\xe5" \ "\xb8\xb8\xe6\xbc\xab\xe9\x95\xb7\xe8\x80\x8c\xe6\xa5\xb5\xe5\x85" \ "\xb6\xe4\xb9\x8f\xe5\x91\xb3\xe5\x92\x8c\xe7\x9b\xb8\xe7\x95\xb6" \ "\xe7\x84\xa1\xe8\xb6\xa3\xe3\x80\x81\xe4\xbb\xa5\xe5\x8f\x8a\xe7" \ "\x84\xa1\xe7\x94\xa8\xe7\x9a\x84\xe3\x80\x81\xe5\x86\x8d\xe5\x8a" \ "\xa0\xe4\xb8\x8a\xe6\xaf\xab\xe7\x84\xa1\xe6\x84\x8f\xe7\xbe\xa9" \ "\xe7\x9a\x84\xe6\x93\xb4\xe5\xb1\x95\xe5\xb1\xac\xe6\x80\xa7\xef" \ "\xbc\x8c\xe8\x80\x8c\xe5\x85\xb6\xe5\x94\xaf\xe4\xb8\x80\xe5\x89" \ "\xb5\xe5\xbb\xba\xe7\x9b\xae\xe7\x9a\x84\xe5\x83\x85\xe6\x98\xaf" \ "\xe7\x82\xba\xe4\xba\x86\xe6\xb8\xac\xe8\xa9\xa6\xe4\xbd\x9c\xe7" \ "\x94\xa8\xe3\x80\x82" | tr -d ' ' (= "pointlessly long attribute for testing", elaborate Chinese in UTF-8 enoding). However, it is not possible to set double the size (110 + 5 is still under 127) in a UTF-8 locale: $setfattr -n user.`cat testing-string testing-string` -v \ `cat testing-string testing-string` testing-string setfattr: testing-string: Numerical result out of range 110 CJK char in UTF-8 is 330 bytes - the generic get/set attribute system call code in linux/fs/xattr.c imposes a 255 byte limit. One can use a combination of iconv to encode content, changing terminal locale for viewing, and an nls=cp932/cp936/cp949/cp950 mount option to fully use 127-unicode attribute in a double-byte locale. Also, as an additional information, it is possible to (mis-)use unicode half-width/full-width forms (U+FFxx) to write attributes which looks like english but not actually ascii. Thanks Anton Altaparmakov for reviewing the earlier ideas behind this change. [akpm@linux-foundation.org: fix build] [akpm@linux-foundation.org: fix build] Signed-off-by: Hin-Tak Leung Cc: Anton Altaparmakov Cc: Vyacheslav Dubeyko Cc: Al Viro Cc: Christoph Hellwig Cc: Sougata Santra Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hfsplus/attributes.c | 11 ++++------ fs/hfsplus/xattr.c | 36 ++++++++++++++++++++------------- fs/hfsplus/xattr_security.c | 49 ++++++++++++++++++++++++++------------------- fs/hfsplus/xattr_trusted.c | 32 ++++++++++++++++++----------- fs/hfsplus/xattr_user.c | 32 ++++++++++++++++++----------- 5 files changed, 94 insertions(+), 66 deletions(-) diff --git a/fs/hfsplus/attributes.c b/fs/hfsplus/attributes.c index caf89a7be0a1..f3345c0b1c62 100644 --- a/fs/hfsplus/attributes.c +++ b/fs/hfsplus/attributes.c @@ -54,14 +54,11 @@ int hfsplus_attr_build_key(struct super_block *sb, hfsplus_btree_key *key, memset(key, 0, sizeof(struct hfsplus_attr_key)); key->attr.cnid = cpu_to_be32(cnid); if (name) { - len = strlen(name); - if (len > HFSPLUS_ATTR_MAX_STRLEN) { - pr_err("invalid xattr name's length\n"); - return -EINVAL; - } - hfsplus_asc2uni(sb, + int res = hfsplus_asc2uni(sb, (struct hfsplus_unistr *)&key->attr.key_name, - HFSPLUS_ATTR_MAX_STRLEN, name, len); + HFSPLUS_ATTR_MAX_STRLEN, name, strlen(name)); + if (res) + return res; len = be16_to_cpu(key->attr.key_name.length); } else { key->attr.key_name.length = 0; diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c index e2b3c9ea1c71..c03c94611cce 100644 --- a/fs/hfsplus/xattr.c +++ b/fs/hfsplus/xattr.c @@ -806,47 +806,55 @@ end_removexattr: static int hfsplus_osx_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + - XATTR_MAC_OSX_PREFIX_LEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - /* * Don't allow retrieving properly prefixed attributes * by prepending them with "osx." */ if (is_known_namespace(name)) return -EOPNOTSUPP; + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + + XATTR_MAC_OSX_PREFIX_LEN + 1, GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; + strcpy(xattr_name, XATTR_MAC_OSX_PREFIX); + strcpy(xattr_name + XATTR_MAC_OSX_PREFIX_LEN, name); - return hfsplus_getxattr(dentry, xattr_name, buffer, size); + res = hfsplus_getxattr(dentry, xattr_name, buffer, size); + kfree(xattr_name); + return res; } static int hfsplus_osx_setxattr(struct dentry *dentry, const char *name, const void *buffer, size_t size, int flags, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + - XATTR_MAC_OSX_PREFIX_LEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - /* * Don't allow setting properly prefixed attributes * by prepending them with "osx." */ if (is_known_namespace(name)) return -EOPNOTSUPP; + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + + XATTR_MAC_OSX_PREFIX_LEN + 1, GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; + strcpy(xattr_name, XATTR_MAC_OSX_PREFIX); + strcpy(xattr_name + XATTR_MAC_OSX_PREFIX_LEN, name); - return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + kfree(xattr_name); + return res; } static size_t hfsplus_osx_listxattr(struct dentry *dentry, char *list, diff --git a/fs/hfsplus/xattr_security.c b/fs/hfsplus/xattr_security.c index 00722765ea79..6ec5e107691f 100644 --- a/fs/hfsplus/xattr_security.c +++ b/fs/hfsplus/xattr_security.c @@ -7,6 +7,8 @@ */ #include +#include + #include "hfsplus_fs.h" #include "xattr.h" #include "acl.h" @@ -14,37 +16,43 @@ static int hfsplus_security_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len + XATTR_SECURITY_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, + GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; strcpy(xattr_name, XATTR_SECURITY_PREFIX); strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name); - return hfsplus_getxattr(dentry, xattr_name, buffer, size); + res = hfsplus_getxattr(dentry, xattr_name, buffer, size); + kfree(xattr_name); + return res; } static int hfsplus_security_setxattr(struct dentry *dentry, const char *name, const void *buffer, size_t size, int flags, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len + XATTR_SECURITY_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, + GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; strcpy(xattr_name, XATTR_SECURITY_PREFIX); strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name); - return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + kfree(xattr_name); + return res; } static size_t hfsplus_security_listxattr(struct dentry *dentry, char *list, @@ -62,31 +70,30 @@ static int hfsplus_initxattrs(struct inode *inode, void *fs_info) { const struct xattr *xattr; - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; - size_t xattr_name_len; + char *xattr_name; int err = 0; + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, + GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; for (xattr = xattr_array; xattr->name != NULL; xattr++) { - xattr_name_len = strlen(xattr->name); - if (xattr_name_len == 0) + if (!strcmp(xattr->name, "")) continue; - if (xattr_name_len + XATTR_SECURITY_PREFIX_LEN > - HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - strcpy(xattr_name, XATTR_SECURITY_PREFIX); strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, xattr->name); memset(xattr_name + - XATTR_SECURITY_PREFIX_LEN + xattr_name_len, 0, 1); + XATTR_SECURITY_PREFIX_LEN + strlen(xattr->name), 0, 1); err = __hfsplus_setxattr(inode, xattr_name, xattr->value, xattr->value_len, 0); if (err) break; } + kfree(xattr_name); return err; } diff --git a/fs/hfsplus/xattr_trusted.c b/fs/hfsplus/xattr_trusted.c index 426cee277542..3c5f27e4746a 100644 --- a/fs/hfsplus/xattr_trusted.c +++ b/fs/hfsplus/xattr_trusted.c @@ -6,43 +6,51 @@ * Handler for trusted extended attributes. */ +#include + #include "hfsplus_fs.h" #include "xattr.h" static int hfsplus_trusted_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len + XATTR_TRUSTED_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, + GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; strcpy(xattr_name, XATTR_TRUSTED_PREFIX); strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name); - return hfsplus_getxattr(dentry, xattr_name, buffer, size); + res = hfsplus_getxattr(dentry, xattr_name, buffer, size); + kfree(xattr_name); + return res; } static int hfsplus_trusted_setxattr(struct dentry *dentry, const char *name, const void *buffer, size_t size, int flags, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len + XATTR_TRUSTED_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, + GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; strcpy(xattr_name, XATTR_TRUSTED_PREFIX); strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name); - return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + kfree(xattr_name); + return res; } static size_t hfsplus_trusted_listxattr(struct dentry *dentry, char *list, diff --git a/fs/hfsplus/xattr_user.c b/fs/hfsplus/xattr_user.c index e34016561ae0..2b625a538b64 100644 --- a/fs/hfsplus/xattr_user.c +++ b/fs/hfsplus/xattr_user.c @@ -6,43 +6,51 @@ * Handler for user extended attributes. */ +#include + #include "hfsplus_fs.h" #include "xattr.h" static int hfsplus_user_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len + XATTR_USER_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, + GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; strcpy(xattr_name, XATTR_USER_PREFIX); strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name); - return hfsplus_getxattr(dentry, xattr_name, buffer, size); + res = hfsplus_getxattr(dentry, xattr_name, buffer, size); + kfree(xattr_name); + return res; } static int hfsplus_user_setxattr(struct dentry *dentry, const char *name, const void *buffer, size_t size, int flags, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len + XATTR_USER_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, + GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; strcpy(xattr_name, XATTR_USER_PREFIX); strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name); - return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + kfree(xattr_name); + return res; } static size_t hfsplus_user_listxattr(struct dentry *dentry, char *list, -- cgit v1.2.3 From 7f2fc81ea26717245fa7e5493a080a9723d6d596 Mon Sep 17 00:00:00 2001 From: Hin-Tak Leung Date: Fri, 6 Jun 2014 14:36:23 -0700 Subject: hfsplus: remove unused routine hfsplus_attr_build_key_uni The directory/file catalog b-tree equivalent, hfsplus_build_key_uni(), is used by hfsplus_find_cat() for internal referencing between catalog records. There is no corresponding usage for attributes - attribute records do not refer to one another. Signed-off-by: Hin-Tak Leung Cc: Sougata Santra Cc: Anton Altaparmakov Cc: Vyacheslav Dubeyko Cc: Al Viro Cc: Christoph Hellwig Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hfsplus/attributes.c | 25 ------------------------- fs/hfsplus/hfsplus_fs.h | 3 --- 2 files changed, 28 deletions(-) diff --git a/fs/hfsplus/attributes.c b/fs/hfsplus/attributes.c index f3345c0b1c62..e5b221de7de6 100644 --- a/fs/hfsplus/attributes.c +++ b/fs/hfsplus/attributes.c @@ -79,31 +79,6 @@ int hfsplus_attr_build_key(struct super_block *sb, hfsplus_btree_key *key, return 0; } -void hfsplus_attr_build_key_uni(hfsplus_btree_key *key, - u32 cnid, - struct hfsplus_attr_unistr *name) -{ - int ustrlen; - - memset(key, 0, sizeof(struct hfsplus_attr_key)); - ustrlen = be16_to_cpu(name->length); - key->attr.cnid = cpu_to_be32(cnid); - key->attr.key_name.length = cpu_to_be16(ustrlen); - ustrlen *= 2; - memcpy(key->attr.key_name.unicode, name->unicode, ustrlen); - - /* The length of the key, as stored in key_len field, does not include - * the size of the key_len field itself. - * So, offsetof(hfsplus_attr_key, key_name) is a trick because - * it takes into consideration key_len field (__be16) of - * hfsplus_attr_key structure instead of length field (__be16) of - * hfsplus_attr_unistr structure. - */ - key->key_len = - cpu_to_be16(offsetof(struct hfsplus_attr_key, key_name) + - ustrlen); -} - hfsplus_attr_entry *hfsplus_alloc_attr_entry(void) { return kmem_cache_alloc(hfsplus_attr_tree_cachep, GFP_KERNEL); diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h index 83dc29286b10..6c08ff6b11b2 100644 --- a/fs/hfsplus/hfsplus_fs.h +++ b/fs/hfsplus/hfsplus_fs.h @@ -375,9 +375,6 @@ int hfsplus_attr_bin_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *); int hfsplus_attr_build_key(struct super_block *, hfsplus_btree_key *, u32, const char *); -void hfsplus_attr_build_key_uni(hfsplus_btree_key *key, - u32 cnid, - struct hfsplus_attr_unistr *name); int hfsplus_find_attr(struct super_block *, u32, const char *, struct hfs_find_data *); int hfsplus_attr_exists(struct inode *inode, const char *name); -- cgit v1.2.3 From 97a62eaefdc196969e9d3857f65fc8a90ee1fe3c Mon Sep 17 00:00:00 2001 From: Sergei Antonov Date: Fri, 6 Jun 2014 14:36:24 -0700 Subject: hfsplus: emit proper file type from readdir hfsplus_readdir() incorrectly returned DT_REG for symbolic links and special files. Return DT_REG, DT_LNK, DT_FIFO, DT_CHR, DT_BLK, DT_SOCK, or DT_UNKNOWN according to mode field in catalog record. Programs relying on information from readdir will now work correctly with HFS+. Signed-off-by: Sergei Antonov Cc: Anton Altaparmakov Cc: Al Viro Cc: Christoph Hellwig Cc: Vyacheslav Dubeyko Cc: Hin-Tak Leung Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hfsplus/dir.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c index fb07d260e692..610a3260bef1 100644 --- a/fs/hfsplus/dir.c +++ b/fs/hfsplus/dir.c @@ -218,13 +218,31 @@ static int hfsplus_readdir(struct file *file, struct dir_context *ctx) be32_to_cpu(entry.folder.id), DT_DIR)) break; } else if (type == HFSPLUS_FILE) { + u16 mode; + unsigned type = DT_UNKNOWN; + if (fd.entrylength < sizeof(struct hfsplus_cat_file)) { pr_err("small file entry\n"); err = -EIO; goto out; } + + mode = be16_to_cpu(entry.file.permissions.mode); + if (S_ISREG(mode)) + type = DT_REG; + else if (S_ISLNK(mode)) + type = DT_LNK; + else if (S_ISFIFO(mode)) + type = DT_FIFO; + else if (S_ISCHR(mode)) + type = DT_CHR; + else if (S_ISBLK(mode)) + type = DT_BLK; + else if (S_ISSOCK(mode)) + type = DT_SOCK; + if (!dir_emit(ctx, strbuf, len, - be32_to_cpu(entry.file.id), DT_REG)) + be32_to_cpu(entry.file.id), type)) break; } else { pr_err("bad catalog entry type\n"); -- cgit v1.2.3 From e46707d1533182d15a84026ba91ed6c9a2662162 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:25 -0700 Subject: fs/hfsplus/bnode.c: replace min/casting by min_t Also fixes some pr_ formats Signed-off-by: Fabian Frederick Cc: Vyacheslav Dubeyko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hfsplus/bnode.c | 32 +++++++++++++++----------------- 1 file changed, 15 insertions(+), 17 deletions(-) diff --git a/fs/hfsplus/bnode.c b/fs/hfsplus/bnode.c index 11c860204520..285502af8df1 100644 --- a/fs/hfsplus/bnode.c +++ b/fs/hfsplus/bnode.c @@ -27,13 +27,13 @@ void hfs_bnode_read(struct hfs_bnode *node, void *buf, int off, int len) pagep = node->page + (off >> PAGE_CACHE_SHIFT); off &= ~PAGE_CACHE_MASK; - l = min(len, (int)PAGE_CACHE_SIZE - off); + l = min_t(int, len, PAGE_CACHE_SIZE - off); memcpy(buf, kmap(*pagep) + off, l); kunmap(*pagep); while ((len -= l) != 0) { buf += l; - l = min(len, (int)PAGE_CACHE_SIZE); + l = min_t(int, len, PAGE_CACHE_SIZE); memcpy(buf, kmap(*++pagep), l); kunmap(*pagep); } @@ -80,14 +80,14 @@ void hfs_bnode_write(struct hfs_bnode *node, void *buf, int off, int len) pagep = node->page + (off >> PAGE_CACHE_SHIFT); off &= ~PAGE_CACHE_MASK; - l = min(len, (int)PAGE_CACHE_SIZE - off); + l = min_t(int, len, PAGE_CACHE_SIZE - off); memcpy(kmap(*pagep) + off, buf, l); set_page_dirty(*pagep); kunmap(*pagep); while ((len -= l) != 0) { buf += l; - l = min(len, (int)PAGE_CACHE_SIZE); + l = min_t(int, len, PAGE_CACHE_SIZE); memcpy(kmap(*++pagep), buf, l); set_page_dirty(*pagep); kunmap(*pagep); @@ -110,13 +110,13 @@ void hfs_bnode_clear(struct hfs_bnode *node, int off, int len) pagep = node->page + (off >> PAGE_CACHE_SHIFT); off &= ~PAGE_CACHE_MASK; - l = min(len, (int)PAGE_CACHE_SIZE - off); + l = min_t(int, len, PAGE_CACHE_SIZE - off); memset(kmap(*pagep) + off, 0, l); set_page_dirty(*pagep); kunmap(*pagep); while ((len -= l) != 0) { - l = min(len, (int)PAGE_CACHE_SIZE); + l = min_t(int, len, PAGE_CACHE_SIZE); memset(kmap(*++pagep), 0, l); set_page_dirty(*pagep); kunmap(*pagep); @@ -142,14 +142,14 @@ void hfs_bnode_copy(struct hfs_bnode *dst_node, int dst, dst &= ~PAGE_CACHE_MASK; if (src == dst) { - l = min(len, (int)PAGE_CACHE_SIZE - src); + l = min_t(int, len, PAGE_CACHE_SIZE - src); memcpy(kmap(*dst_page) + src, kmap(*src_page) + src, l); kunmap(*src_page); set_page_dirty(*dst_page); kunmap(*dst_page); while ((len -= l) != 0) { - l = min(len, (int)PAGE_CACHE_SIZE); + l = min_t(int, len, PAGE_CACHE_SIZE); memcpy(kmap(*++dst_page), kmap(*++src_page), l); kunmap(*src_page); set_page_dirty(*dst_page); @@ -251,7 +251,7 @@ void hfs_bnode_move(struct hfs_bnode *node, int dst, int src, int len) dst &= ~PAGE_CACHE_MASK; if (src == dst) { - l = min(len, (int)PAGE_CACHE_SIZE - src); + l = min_t(int, len, PAGE_CACHE_SIZE - src); memmove(kmap(*dst_page) + src, kmap(*src_page) + src, l); kunmap(*src_page); @@ -259,7 +259,7 @@ void hfs_bnode_move(struct hfs_bnode *node, int dst, int src, int len) kunmap(*dst_page); while ((len -= l) != 0) { - l = min(len, (int)PAGE_CACHE_SIZE); + l = min_t(int, len, PAGE_CACHE_SIZE); memmove(kmap(*++dst_page), kmap(*++src_page), l); kunmap(*src_page); @@ -386,9 +386,8 @@ struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *tree, u32 cnid) struct hfs_bnode *node; if (cnid >= tree->node_count) { - pr_err("request for non-existent node " - "%d in B*Tree\n", - cnid); + pr_err("request for non-existent node %d in B*Tree\n", + cnid); return NULL; } @@ -409,9 +408,8 @@ static struct hfs_bnode *__hfs_bnode_create(struct hfs_btree *tree, u32 cnid) loff_t off; if (cnid >= tree->node_count) { - pr_err("request for non-existent node " - "%d in B*Tree\n", - cnid); + pr_err("request for non-existent node %d in B*Tree\n", + cnid); return NULL; } @@ -602,7 +600,7 @@ struct hfs_bnode *hfs_bnode_create(struct hfs_btree *tree, u32 num) pagep = node->page; memset(kmap(*pagep) + node->page_offset, 0, - min((int)PAGE_CACHE_SIZE, (int)tree->node_size)); + min_t(int, PAGE_CACHE_SIZE, tree->node_size)); set_page_dirty(*pagep); kunmap(*pagep); for (i = 1; i < tree->pages_per_bnode; i++) { -- cgit v1.2.3 From d8983ca0aa86c0bfed13f5232340fe08fe963121 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:26 -0700 Subject: fs/hfsplus/options.c: replace seq_printf by seq_puts Replace seq_printf where possible Signed-off-by: Fabian Frederick Cc: Vyacheslav Dubeyko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hfsplus/options.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c index 68537e8b7a09..c90b72ee676d 100644 --- a/fs/hfsplus/options.c +++ b/fs/hfsplus/options.c @@ -173,9 +173,8 @@ int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi) if (p) sbi->nls = load_nls(p); if (!sbi->nls) { - pr_err("unable to load " - "nls mapping \"%s\"\n", - p); + pr_err("unable to load nls mapping \"%s\"\n", + p); kfree(p); return 0; } @@ -232,8 +231,8 @@ int hfsplus_show_options(struct seq_file *seq, struct dentry *root) if (sbi->nls) seq_printf(seq, ",nls=%s", sbi->nls->charset); if (test_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags)) - seq_printf(seq, ",nodecompose"); + seq_puts(seq, ",nodecompose"); if (test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) - seq_printf(seq, ",nobarrier"); + seq_puts(seq, ",nobarrier"); return 0; } -- cgit v1.2.3 From 915ab236d3c491f9bb0f6596d03e25b37f4d5a20 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:27 -0700 Subject: fs/hfsplus/wrapper.c: replace min/casting by min_t Also add * before function comments (it was not detected by kernel-doc) Signed-off-by: Fabian Frederick Cc: Vyacheslav Dubeyko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hfsplus/wrapper.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c index 3f999649587f..284c90f943a1 100644 --- a/fs/hfsplus/wrapper.c +++ b/fs/hfsplus/wrapper.c @@ -24,8 +24,8 @@ struct hfsplus_wd { u16 embed_count; }; -/* - * hfsplus_submit_bio - Perfrom block I/O +/** + * hfsplus_submit_bio - Perform block I/O * @sb: super block of volume for I/O * @sector: block to read or write, for blocks of HFSPLUS_SECTOR_SIZE bytes * @buf: buffer for I/O @@ -234,7 +234,7 @@ reread: sbi->alloc_blksz_shift = 0; while ((blocksize >>= 1) != 0) sbi->alloc_blksz_shift++; - blocksize = min(sbi->alloc_blksz, (u32)PAGE_SIZE); + blocksize = min_t(u32, sbi->alloc_blksz, PAGE_SIZE); /* * Align block size to block offset. -- cgit v1.2.3 From 2cd282a1bc6b9d111b8beee63bea0af735a8a1aa Mon Sep 17 00:00:00 2001 From: Sergei Antonov Date: Fri, 6 Jun 2014 14:36:28 -0700 Subject: hfsplus: fix "unused node is not erased" error Zero newly allocated extents in the catalog tree if volume attributes tell us to. Not doing so we risk getting the "unused node is not erased" error. See kHFSUnusedNodeFix flag in Apple's source code for reference. There was a previous commit clearing the node when it is freed: commit 899bed05e9f6 ("hfsplus: fix issue with unzeroed unused b-tree nodes"). But it did not handle newly allocated extents (this patch fixes it). And it zeroed nodes in all trees unconditionally which is an overkill. This patch adds a condition and also switches to 'tree->node_size' as a simpler method of getting the length to zero. Signed-off-by: Sergei Antonov Cc: Anton Altaparmakov Cc: Al Viro Cc: Christoph Hellwig Cc: Vyacheslav Dubeyko Cc: Hin-Tak Leung Cc: Kyle Laracey Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hfsplus/bnode.c | 17 +++++++++++++++-- fs/hfsplus/btree.c | 2 +- fs/hfsplus/extents.c | 10 ++++++++-- fs/hfsplus/hfsplus_fs.h | 3 ++- fs/hfsplus/hfsplus_raw.h | 1 + fs/hfsplus/xattr.c | 2 +- 6 files changed, 28 insertions(+), 7 deletions(-) diff --git a/fs/hfsplus/bnode.c b/fs/hfsplus/bnode.c index 285502af8df1..759708fd9331 100644 --- a/fs/hfsplus/bnode.c +++ b/fs/hfsplus/bnode.c @@ -646,8 +646,8 @@ void hfs_bnode_put(struct hfs_bnode *node) if (test_bit(HFS_BNODE_DELETED, &node->flags)) { hfs_bnode_unhash(node); spin_unlock(&tree->hash_lock); - hfs_bnode_clear(node, 0, - PAGE_CACHE_SIZE * tree->pages_per_bnode); + if (hfs_bnode_need_zeroout(tree)) + hfs_bnode_clear(node, 0, tree->node_size); hfs_bmap_free(node); hfs_bnode_free(node); return; @@ -656,3 +656,16 @@ void hfs_bnode_put(struct hfs_bnode *node) } } +/* + * Unused nodes have to be zeroed if this is the catalog tree and + * a corresponding flag in the volume header is set. + */ +bool hfs_bnode_need_zeroout(struct hfs_btree *tree) +{ + struct super_block *sb = tree->inode->i_sb; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); + const u32 volume_attr = be32_to_cpu(sbi->s_vhdr->attributes); + + return tree->cnid == HFSPLUS_CAT_CNID && + volume_attr & HFSPLUS_VOL_UNUSED_NODE_FIX; +} diff --git a/fs/hfsplus/btree.c b/fs/hfsplus/btree.c index 0fcec8b2a90b..3345c7553edc 100644 --- a/fs/hfsplus/btree.c +++ b/fs/hfsplus/btree.c @@ -358,7 +358,7 @@ struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree) u32 count; int res; - res = hfsplus_file_extend(inode); + res = hfsplus_file_extend(inode, hfs_bnode_need_zeroout(tree)); if (res) return ERR_PTR(res); hip->phys_size = inode->i_size = diff --git a/fs/hfsplus/extents.c b/fs/hfsplus/extents.c index a7aafb35b624..a09fcb68c364 100644 --- a/fs/hfsplus/extents.c +++ b/fs/hfsplus/extents.c @@ -235,7 +235,7 @@ int hfsplus_get_block(struct inode *inode, sector_t iblock, if (iblock > hip->fs_blocks || !create) return -EIO; if (ablock >= hip->alloc_blocks) { - res = hfsplus_file_extend(inode); + res = hfsplus_file_extend(inode, false); if (res) return res; } @@ -425,7 +425,7 @@ int hfsplus_free_fork(struct super_block *sb, u32 cnid, return res; } -int hfsplus_file_extend(struct inode *inode) +int hfsplus_file_extend(struct inode *inode, bool zeroout) { struct super_block *sb = inode->i_sb; struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); @@ -463,6 +463,12 @@ int hfsplus_file_extend(struct inode *inode) } } + if (zeroout) { + res = sb_issue_zeroout(sb, start, len, GFP_NOFS); + if (res) + goto out; + } + hfs_dbg(EXTENT, "extend %lu: %u,%u\n", inode->i_ino, start, len); if (hip->alloc_blocks <= hip->first_blocks) { diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h index 6c08ff6b11b2..d5ab79bd2f0f 100644 --- a/fs/hfsplus/hfsplus_fs.h +++ b/fs/hfsplus/hfsplus_fs.h @@ -414,6 +414,7 @@ void hfs_bnode_free(struct hfs_bnode *); struct hfs_bnode *hfs_bnode_create(struct hfs_btree *, u32); void hfs_bnode_get(struct hfs_bnode *); void hfs_bnode_put(struct hfs_bnode *); +bool hfs_bnode_need_zeroout(struct hfs_btree *); /* brec.c */ u16 hfs_brec_lenoff(struct hfs_bnode *, u16, u16 *); @@ -460,7 +461,7 @@ int hfsplus_ext_write_extent(struct inode *); int hfsplus_get_block(struct inode *, sector_t, struct buffer_head *, int); int hfsplus_free_fork(struct super_block *, u32, struct hfsplus_fork_raw *, int); -int hfsplus_file_extend(struct inode *); +int hfsplus_file_extend(struct inode *, bool zeroout); void hfsplus_file_truncate(struct inode *); /* inode.c */ diff --git a/fs/hfsplus/hfsplus_raw.h b/fs/hfsplus/hfsplus_raw.h index 5a126828d85e..8298d0985f81 100644 --- a/fs/hfsplus/hfsplus_raw.h +++ b/fs/hfsplus/hfsplus_raw.h @@ -144,6 +144,7 @@ struct hfsplus_vh { #define HFSPLUS_VOL_NODEID_REUSED (1 << 12) #define HFSPLUS_VOL_JOURNALED (1 << 13) #define HFSPLUS_VOL_SOFTLOCK (1 << 15) +#define HFSPLUS_VOL_UNUSED_NODE_FIX (1 << 31) /* HFS+ BTree node descriptor */ struct hfs_bnode_desc { diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c index c03c94611cce..aab093c27c59 100644 --- a/fs/hfsplus/xattr.c +++ b/fs/hfsplus/xattr.c @@ -196,7 +196,7 @@ check_attr_tree_state_again: } while (hip->alloc_blocks < hip->clump_blocks) { - err = hfsplus_file_extend(attr_file); + err = hfsplus_file_extend(attr_file, false); if (unlikely(err)) { pr_err("failed to extend attributes file\n"); goto end_attr_file_creation; -- cgit v1.2.3 From 297cc27207446e9f054492fff5b561cebc589328 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:29 -0700 Subject: fs/hfsplus/wrapper.c: replace shift loop by ilog2 Replace while blocksize;shift by ilog2 Signed-off-by: Fabian Frederick Cc: Vyacheslav Dubeyko Cc: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hfsplus/wrapper.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c index 284c90f943a1..cc6235671437 100644 --- a/fs/hfsplus/wrapper.c +++ b/fs/hfsplus/wrapper.c @@ -231,9 +231,7 @@ reread: if (blocksize < HFSPLUS_SECTOR_SIZE || ((blocksize - 1) & blocksize)) goto out_free_backup_vhdr; sbi->alloc_blksz = blocksize; - sbi->alloc_blksz_shift = 0; - while ((blocksize >>= 1) != 0) - sbi->alloc_blksz_shift++; + sbi->alloc_blksz_shift = ilog2(blocksize); blocksize = min_t(u32, sbi->alloc_blksz, PAGE_SIZE); /* -- cgit v1.2.3 From ffbc0671618e9354ec065144f8a66ec5dd7d5d75 Mon Sep 17 00:00:00 2001 From: Sergei Antonov Date: Fri, 6 Jun 2014 14:36:30 -0700 Subject: hfsplus: coding style fix for declarations in hfsplus_fs.h Some function declarations in hfsplus_fs.h were with argument names, some without, and some were mixed. This patch adds argument names everywhere, sorts function in order they go in .c files, and moves hfs_part_find() to a proper section. Auto-formatting and sorting was done with: cfunctions *.c | indent -linux | sed "s| \* | \*|" Signed-off-by: Sergei Antonov Cc: Vyacheslav Dubeyko Cc: Hin-Tak Leung Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hfsplus/hfsplus_fs.h | 203 +++++++++++++++++++++++++----------------------- 1 file changed, 107 insertions(+), 96 deletions(-) diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h index d5ab79bd2f0f..eb5e059f481a 100644 --- a/fs/hfsplus/hfsplus_fs.h +++ b/fs/hfsplus/hfsplus_fs.h @@ -369,112 +369,119 @@ typedef int (*search_strategy_t)(struct hfs_bnode *, /* attributes.c */ int __init hfsplus_create_attr_tree_cache(void); void hfsplus_destroy_attr_tree_cache(void); +int hfsplus_attr_bin_cmp_key(const hfsplus_btree_key *k1, + const hfsplus_btree_key *k2); +int hfsplus_attr_build_key(struct super_block *sb, hfsplus_btree_key *key, + u32 cnid, const char *name); hfsplus_attr_entry *hfsplus_alloc_attr_entry(void); -void hfsplus_destroy_attr_entry(hfsplus_attr_entry *entry_p); -int hfsplus_attr_bin_cmp_key(const hfsplus_btree_key *, - const hfsplus_btree_key *); -int hfsplus_attr_build_key(struct super_block *, hfsplus_btree_key *, - u32, const char *); -int hfsplus_find_attr(struct super_block *, u32, - const char *, struct hfs_find_data *); +void hfsplus_destroy_attr_entry(hfsplus_attr_entry *entry); +int hfsplus_find_attr(struct super_block *sb, u32 cnid, const char *name, + struct hfs_find_data *fd); int hfsplus_attr_exists(struct inode *inode, const char *name); -int hfsplus_create_attr(struct inode *, const char *, const void *, size_t); -int hfsplus_delete_attr(struct inode *, const char *); +int hfsplus_create_attr(struct inode *inode, const char *name, + const void *value, size_t size); +int hfsplus_delete_attr(struct inode *inode, const char *name); int hfsplus_delete_all_attrs(struct inode *dir, u32 cnid); /* bitmap.c */ -int hfsplus_block_allocate(struct super_block *, u32, u32, u32 *); -int hfsplus_block_free(struct super_block *, u32, u32); +int hfsplus_block_allocate(struct super_block *sb, u32 size, u32 offset, + u32 *max); +int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count); /* btree.c */ -u32 hfsplus_calc_btree_clump_size(u32, u32, u64, int); -struct hfs_btree *hfs_btree_open(struct super_block *, u32); -void hfs_btree_close(struct hfs_btree *); -int hfs_btree_write(struct hfs_btree *); -struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *); -void hfs_bmap_free(struct hfs_bnode *); +u32 hfsplus_calc_btree_clump_size(u32 block_size, u32 node_size, u64 sectors, + int file_id); +struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id); +void hfs_btree_close(struct hfs_btree *tree); +int hfs_btree_write(struct hfs_btree *tree); +struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree); +void hfs_bmap_free(struct hfs_bnode *node); /* bnode.c */ -void hfs_bnode_read(struct hfs_bnode *, void *, int, int); -u16 hfs_bnode_read_u16(struct hfs_bnode *, int); -u8 hfs_bnode_read_u8(struct hfs_bnode *, int); -void hfs_bnode_read_key(struct hfs_bnode *, void *, int); -void hfs_bnode_write(struct hfs_bnode *, void *, int, int); -void hfs_bnode_write_u16(struct hfs_bnode *, int, u16); -void hfs_bnode_clear(struct hfs_bnode *, int, int); -void hfs_bnode_copy(struct hfs_bnode *, int, - struct hfs_bnode *, int, int); -void hfs_bnode_move(struct hfs_bnode *, int, int, int); -void hfs_bnode_dump(struct hfs_bnode *); -void hfs_bnode_unlink(struct hfs_bnode *); -struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *, u32); -struct hfs_bnode *hfs_bnode_find(struct hfs_btree *, u32); -void hfs_bnode_unhash(struct hfs_bnode *); -void hfs_bnode_free(struct hfs_bnode *); -struct hfs_bnode *hfs_bnode_create(struct hfs_btree *, u32); -void hfs_bnode_get(struct hfs_bnode *); -void hfs_bnode_put(struct hfs_bnode *); -bool hfs_bnode_need_zeroout(struct hfs_btree *); +void hfs_bnode_read(struct hfs_bnode *node, void *buf, int off, int len); +u16 hfs_bnode_read_u16(struct hfs_bnode *node, int off); +u8 hfs_bnode_read_u8(struct hfs_bnode *node, int off); +void hfs_bnode_read_key(struct hfs_bnode *node, void *key, int off); +void hfs_bnode_write(struct hfs_bnode *node, void *buf, int off, int len); +void hfs_bnode_write_u16(struct hfs_bnode *node, int off, u16 data); +void hfs_bnode_clear(struct hfs_bnode *node, int off, int len); +void hfs_bnode_copy(struct hfs_bnode *dst_node, int dst, + struct hfs_bnode *src_node, int src, int len); +void hfs_bnode_move(struct hfs_bnode *node, int dst, int src, int len); +void hfs_bnode_dump(struct hfs_bnode *node); +void hfs_bnode_unlink(struct hfs_bnode *node); +struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *tree, u32 cnid); +void hfs_bnode_unhash(struct hfs_bnode *node); +struct hfs_bnode *hfs_bnode_find(struct hfs_btree *tree, u32 num); +void hfs_bnode_free(struct hfs_bnode *node); +struct hfs_bnode *hfs_bnode_create(struct hfs_btree *tree, u32 num); +void hfs_bnode_get(struct hfs_bnode *node); +void hfs_bnode_put(struct hfs_bnode *node); +bool hfs_bnode_need_zeroout(struct hfs_btree *tree); /* brec.c */ -u16 hfs_brec_lenoff(struct hfs_bnode *, u16, u16 *); -u16 hfs_brec_keylen(struct hfs_bnode *, u16); -int hfs_brec_insert(struct hfs_find_data *, void *, int); -int hfs_brec_remove(struct hfs_find_data *); +u16 hfs_brec_lenoff(struct hfs_bnode *node, u16 rec, u16 *off); +u16 hfs_brec_keylen(struct hfs_bnode *node, u16 rec); +int hfs_brec_insert(struct hfs_find_data *fd, void *entry, int entry_len); +int hfs_brec_remove(struct hfs_find_data *fd); /* bfind.c */ -int hfs_find_init(struct hfs_btree *, struct hfs_find_data *); -void hfs_find_exit(struct hfs_find_data *); -int hfs_find_1st_rec_by_cnid(struct hfs_bnode *, - struct hfs_find_data *, - int *, int *, int *); -int hfs_find_rec_by_key(struct hfs_bnode *, - struct hfs_find_data *, - int *, int *, int *); -int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *, - search_strategy_t); -int hfs_brec_find(struct hfs_find_data *, search_strategy_t); -int hfs_brec_read(struct hfs_find_data *, void *, int); -int hfs_brec_goto(struct hfs_find_data *, int); +int hfs_find_init(struct hfs_btree *tree, struct hfs_find_data *fd); +void hfs_find_exit(struct hfs_find_data *fd); +int hfs_find_1st_rec_by_cnid(struct hfs_bnode *bnode, struct hfs_find_data *fd, + int *begin, int *end, int *cur_rec); +int hfs_find_rec_by_key(struct hfs_bnode *bnode, struct hfs_find_data *fd, + int *begin, int *end, int *cur_rec); +int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd, + search_strategy_t rec_found); +int hfs_brec_find(struct hfs_find_data *fd, search_strategy_t do_key_compare); +int hfs_brec_read(struct hfs_find_data *fd, void *rec, int rec_len); +int hfs_brec_goto(struct hfs_find_data *fd, int cnt); /* catalog.c */ -int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *, - const hfsplus_btree_key *); -int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *, - const hfsplus_btree_key *); -void hfsplus_cat_build_key(struct super_block *sb, - hfsplus_btree_key *, u32, struct qstr *); -int hfsplus_find_cat(struct super_block *, u32, struct hfs_find_data *); -int hfsplus_create_cat(u32, struct inode *, struct qstr *, struct inode *); -int hfsplus_delete_cat(u32, struct inode *, struct qstr *); -int hfsplus_rename_cat(u32, struct inode *, struct qstr *, - struct inode *, struct qstr *); +int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *k1, + const hfsplus_btree_key *k2); +int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *k1, + const hfsplus_btree_key *k2); +void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *key, + u32 parent, struct qstr *str); void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms); +int hfsplus_find_cat(struct super_block *sb, u32 cnid, + struct hfs_find_data *fd); +int hfsplus_create_cat(u32 cnid, struct inode *dir, struct qstr *str, + struct inode *inode); +int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str); +int hfsplus_rename_cat(u32 cnid, struct inode *src_dir, struct qstr *src_name, + struct inode *dst_dir, struct qstr *dst_name); /* dir.c */ extern const struct inode_operations hfsplus_dir_inode_operations; extern const struct file_operations hfsplus_dir_operations; /* extents.c */ -int hfsplus_ext_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *); -int hfsplus_ext_write_extent(struct inode *); -int hfsplus_get_block(struct inode *, sector_t, struct buffer_head *, int); -int hfsplus_free_fork(struct super_block *, u32, - struct hfsplus_fork_raw *, int); -int hfsplus_file_extend(struct inode *, bool zeroout); -void hfsplus_file_truncate(struct inode *); +int hfsplus_ext_cmp_key(const hfsplus_btree_key *k1, + const hfsplus_btree_key *k2); +int hfsplus_ext_write_extent(struct inode *inode); +int hfsplus_get_block(struct inode *inode, sector_t iblock, + struct buffer_head *bh_result, int create); +int hfsplus_free_fork(struct super_block *sb, u32 cnid, + struct hfsplus_fork_raw *fork, int type); +int hfsplus_file_extend(struct inode *inode, bool zeroout); +void hfsplus_file_truncate(struct inode *inode); /* inode.c */ extern const struct address_space_operations hfsplus_aops; extern const struct address_space_operations hfsplus_btree_aops; extern const struct dentry_operations hfsplus_dentry_operations; -void hfsplus_inode_read_fork(struct inode *, struct hfsplus_fork_raw *); -void hfsplus_inode_write_fork(struct inode *, struct hfsplus_fork_raw *); -int hfsplus_cat_read_inode(struct inode *, struct hfs_find_data *); -int hfsplus_cat_write_inode(struct inode *); -struct inode *hfsplus_new_inode(struct super_block *, umode_t); -void hfsplus_delete_inode(struct inode *); +struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode); +void hfsplus_delete_inode(struct inode *inode); +void hfsplus_inode_read_fork(struct inode *inode, + struct hfsplus_fork_raw *fork); +void hfsplus_inode_write_fork(struct inode *inode, + struct hfsplus_fork_raw *fork); +int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd); +int hfsplus_cat_write_inode(struct inode *inode); int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, int datasync); @@ -482,13 +489,17 @@ int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, long hfsplus_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); /* options.c */ -int hfsplus_parse_options(char *, struct hfsplus_sb_info *); +void hfsplus_fill_defaults(struct hfsplus_sb_info *opts); int hfsplus_parse_options_remount(char *input, int *force); -void hfsplus_fill_defaults(struct hfsplus_sb_info *); -int hfsplus_show_options(struct seq_file *, struct dentry *); +int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi); +int hfsplus_show_options(struct seq_file *seq, struct dentry *root); + +/* part_tbl.c */ +int hfs_part_find(struct super_block *sb, sector_t *part_start, + sector_t *part_size); /* super.c */ -struct inode *hfsplus_iget(struct super_block *, unsigned long); +struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino); void hfsplus_mark_mdb_dirty(struct super_block *sb); /* tables.c */ @@ -497,23 +508,23 @@ extern u16 hfsplus_decompose_table[]; extern u16 hfsplus_compose_table[]; /* unicode.c */ -int hfsplus_strcasecmp(const struct hfsplus_unistr *, - const struct hfsplus_unistr *); -int hfsplus_strcmp(const struct hfsplus_unistr *, - const struct hfsplus_unistr *); -int hfsplus_uni2asc(struct super_block *, - const struct hfsplus_unistr *, char *, int *); -int hfsplus_asc2uni(struct super_block *, - struct hfsplus_unistr *, int, const char *, int); +int hfsplus_strcasecmp(const struct hfsplus_unistr *s1, + const struct hfsplus_unistr *s2); +int hfsplus_strcmp(const struct hfsplus_unistr *s1, + const struct hfsplus_unistr *s2); +int hfsplus_uni2asc(struct super_block *sb, const struct hfsplus_unistr *ustr, + char *astr, int *len_p); +int hfsplus_asc2uni(struct super_block *sb, struct hfsplus_unistr *ustr, + int max_unistr_len, const char *astr, int len); int hfsplus_hash_dentry(const struct dentry *dentry, struct qstr *str); -int hfsplus_compare_dentry(const struct dentry *parent, const struct dentry *dentry, - unsigned int len, const char *str, const struct qstr *name); +int hfsplus_compare_dentry(const struct dentry *parent, + const struct dentry *dentry, unsigned int len, + const char *str, const struct qstr *name); /* wrapper.c */ -int hfsplus_read_wrapper(struct super_block *); -int hfs_part_find(struct super_block *, sector_t *, sector_t *); -int hfsplus_submit_bio(struct super_block *sb, sector_t sector, - void *buf, void **data, int rw); +int hfsplus_submit_bio(struct super_block *sb, sector_t sector, void *buf, + void **data, int rw); +int hfsplus_read_wrapper(struct super_block *sb); /* time macros */ #define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U) -- cgit v1.2.3 From b73f3d0e70b1ff6081980d3fa64e187d1796852c Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:31 -0700 Subject: fs/hfsplus: fix pr_foo() and hfs_dbg formats Signed-off-by: Fabian Frederick Suggested-By: Vyacheslav Dubeyko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hfsplus/extents.c | 7 +++---- fs/hfsplus/super.c | 3 ++- fs/hfsplus/xattr.c | 2 +- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/fs/hfsplus/extents.c b/fs/hfsplus/extents.c index a09fcb68c364..feca524ce2a5 100644 --- a/fs/hfsplus/extents.c +++ b/fs/hfsplus/extents.c @@ -436,10 +436,9 @@ int hfsplus_file_extend(struct inode *inode, bool zeroout) if (sbi->alloc_file->i_size * 8 < sbi->total_blocks - sbi->free_blocks + 8) { /* extend alloc file */ - pr_err("extend alloc file! " - "(%llu,%u,%u)\n", - sbi->alloc_file->i_size * 8, - sbi->total_blocks, sbi->free_blocks); + pr_err("extend alloc file! (%llu,%u,%u)\n", + sbi->alloc_file->i_size * 8, + sbi->total_blocks, sbi->free_blocks); return -ENOSPC; } diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index a513d2d36be9..4cf2024b87da 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -131,9 +131,10 @@ static int hfsplus_system_write_inode(struct inode *inode) hfsplus_inode_write_fork(inode, fork); if (tree) { int err = hfs_btree_write(tree); + if (err) { pr_err("b-tree write err: %d, ino %lu\n", - err, inode->i_ino); + err, inode->i_ino); return err; } } diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c index aab093c27c59..744e2618046a 100644 --- a/fs/hfsplus/xattr.c +++ b/fs/hfsplus/xattr.c @@ -70,7 +70,7 @@ static void hfsplus_init_header_node(struct inode *attr_file, loff_t tmp; hfs_dbg(ATTR_MOD, "init_hdr_attr_file: clump %u, node_size %u\n", - clump_size, node_size); + clump_size, node_size); /* The end of the node contains list of record offsets */ rec_offsets = (__be16 *)(buf + node_size); -- cgit v1.2.3 From df3d4e7a240890e323e87f7f16e25d05b6c8827c Mon Sep 17 00:00:00 2001 From: Christian Kujau Date: Fri, 6 Jun 2014 14:36:32 -0700 Subject: hfsplus: fix compiler warning on PowerPC Commit a99b7069aab8 ("hfsplus: Fix undefined __divdi3 in hfsplus_init_header_node()") introduced do_div() to xattr.c and the warning below too. As Geert remarked: "tmp" is "loff_t" which is "__kernel_loff_t", which is "long long", i.e. signed, while include/asm-generic/div64.h compares its type with "uint64_t". As inode sizes are positive, it should be safe to change the type of "tmp" to "u64". In file included from arch/powerpc/include/asm/div64.h:1:0, from include/linux/kernel.h:124, from include/asm-generic/bug.h:13, from arch/powerpc/include/asm/bug.h:127, from include/linux/bug.h:4, from include/linux/thread_info.h:11, from include/asm-generic/preempt.h:4, from arch/powerpc/include/generated/asm/preempt.h:1, from include/linux/preempt.h:18, from include/linux/spinlock.h:50, from include/linux/wait.h:8, from include/linux/fs.h:6, from fs/hfsplus/hfsplus_fs.h:19, from fs/hfsplus/xattr.c:9: fs/hfsplus/xattr.c: In function 'hfsplus_init_header_node': include/asm-generic/div64.h:43:28: warning: comparison of distinct pointer types lacks a cast [enabled by default] (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ ^ fs/hfsplus/xattr.c:86:2: note: in expansion of macro 'do_div' do_div(tmp, node_size); ^ Signed-off-by: Christian Kujau Signed-off-by: Geert Uytterhoeven Acked-by: Sergei Antonov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hfsplus/xattr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c index 744e2618046a..d98094a9f476 100644 --- a/fs/hfsplus/xattr.c +++ b/fs/hfsplus/xattr.c @@ -67,7 +67,7 @@ static void hfsplus_init_header_node(struct inode *attr_file, char *bmp; u32 used_nodes; u32 used_bmp_bytes; - loff_t tmp; + u64 tmp; hfs_dbg(ATTR_MOD, "init_hdr_attr_file: clump %u, node_size %u\n", clump_size, node_size); -- cgit v1.2.3 From 45641c82c1e3aeaef72d693b24938da45ffb0cfc Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:33 -0700 Subject: fs/ufs/balloc.c: remove err parameter in ufs_add_fragments err is used in ufs_new_fragments (ufs_add_fragments only callsite) not in ufs_add_fragments. Signed-off-by: Fabian Frederick Cc: Evgeniy Dushistov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ufs/balloc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c index 0ab1de4b39a5..184323cac1a4 100644 --- a/fs/ufs/balloc.c +++ b/fs/ufs/balloc.c @@ -24,7 +24,7 @@ #define INVBLOCK ((u64)-1L) -static u64 ufs_add_fragments(struct inode *, u64, unsigned, unsigned, int *); +static u64 ufs_add_fragments(struct inode *, u64, unsigned, unsigned); static u64 ufs_alloc_fragments(struct inode *, unsigned, u64, unsigned, int *); static u64 ufs_alloccg_block(struct inode *, struct ufs_cg_private_info *, u64, int *); static u64 ufs_bitmap_search (struct super_block *, struct ufs_cg_private_info *, u64, unsigned); @@ -432,7 +432,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, /* * resize block */ - result = ufs_add_fragments (inode, tmp, oldcount, newcount, err); + result = ufs_add_fragments(inode, tmp, oldcount, newcount); if (result) { *err = 0; UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag, @@ -491,7 +491,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, } static u64 ufs_add_fragments(struct inode *inode, u64 fragment, - unsigned oldcount, unsigned newcount, int *err) + unsigned oldcount, unsigned newcount) { struct super_block * sb; struct ufs_sb_private_info * uspi; -- cgit v1.2.3 From b7cb1ce2205c45bf6d356cd358b52adb55bbcf5d Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:34 -0700 Subject: fs/hpfs: convert printk to pr_foo() No level printk in hptfs_error converted to pr_err (others to pr_warn or pr_info) This patch also fixes if/then/else checkpatch warnings Signed-off-by: Fabian Frederick Cc: Mikulas Patocka Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hpfs/alloc.c | 2 +- fs/hpfs/buffer.c | 12 ++++++------ fs/hpfs/dir.c | 6 +++--- fs/hpfs/dnode.c | 42 +++++++++++++++++++++++++----------------- fs/hpfs/ea.c | 6 +++--- fs/hpfs/inode.c | 3 ++- fs/hpfs/map.c | 17 ++++++++++------- fs/hpfs/name.c | 11 ++++++----- fs/hpfs/namei.c | 2 +- fs/hpfs/super.c | 55 ++++++++++++++++++++++++++++++++----------------------- 10 files changed, 89 insertions(+), 67 deletions(-) diff --git a/fs/hpfs/alloc.c b/fs/hpfs/alloc.c index 58b5106186d0..f005046e1591 100644 --- a/fs/hpfs/alloc.c +++ b/fs/hpfs/alloc.c @@ -316,7 +316,7 @@ void hpfs_free_sectors(struct super_block *s, secno sec, unsigned n) struct quad_buffer_head qbh; __le32 *bmp; struct hpfs_sb_info *sbi = hpfs_sb(s); - /*printk("2 - ");*/ + /*pr_info("2 - ");*/ if (!n) return; if (sec < 0x12) { hpfs_error(s, "Trying to free reserved sector %08x", sec); diff --git a/fs/hpfs/buffer.c b/fs/hpfs/buffer.c index 139ef1684d07..4b61be32a91d 100644 --- a/fs/hpfs/buffer.c +++ b/fs/hpfs/buffer.c @@ -55,7 +55,7 @@ void *hpfs_map_sector(struct super_block *s, unsigned secno, struct buffer_head if (bh != NULL) return bh->b_data; else { - printk("HPFS: hpfs_map_sector: read error\n"); + pr_warn("HPFS: hpfs_map_sector: read error\n"); return NULL; } } @@ -76,7 +76,7 @@ void *hpfs_get_sector(struct super_block *s, unsigned secno, struct buffer_head set_buffer_uptodate(bh); return bh->b_data; } else { - printk("HPFS: hpfs_get_sector: getblk failed\n"); + pr_warn("HPFS: hpfs_get_sector: getblk failed\n"); return NULL; } } @@ -93,7 +93,7 @@ void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffe cond_resched(); if (secno & 3) { - printk("HPFS: hpfs_map_4sectors: unaligned read\n"); + pr_warn("HPFS: hpfs_map_4sectors: unaligned read\n"); return NULL; } @@ -112,7 +112,7 @@ void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffe qbh->data = data = kmalloc(2048, GFP_NOFS); if (!data) { - printk("HPFS: hpfs_map_4sectors: out of memory\n"); + pr_warn("HPFS: hpfs_map_4sectors: out of memory\n"); goto bail4; } @@ -145,7 +145,7 @@ void *hpfs_get_4sectors(struct super_block *s, unsigned secno, hpfs_lock_assert(s); if (secno & 3) { - printk("HPFS: hpfs_get_4sectors: unaligned read\n"); + pr_warn("HPFS: hpfs_get_4sectors: unaligned read\n"); return NULL; } @@ -161,7 +161,7 @@ void *hpfs_get_4sectors(struct super_block *s, unsigned secno, } if (!(qbh->data = kmalloc(2048, GFP_NOFS))) { - printk("HPFS: hpfs_get_4sectors: out of memory\n"); + pr_warn("HPFS: hpfs_get_4sectors: out of memory\n"); goto bail4; } return qbh->data; diff --git a/fs/hpfs/dir.c b/fs/hpfs/dir.c index 292b1acb9b81..11ea93637e28 100644 --- a/fs/hpfs/dir.c +++ b/fs/hpfs/dir.c @@ -36,7 +36,7 @@ static loff_t hpfs_dir_lseek(struct file *filp, loff_t off, int whence) mutex_lock(&i->i_mutex); hpfs_lock(s); - /*printk("dir lseek\n");*/ + /*pr_info("dir lseek\n");*/ if (new_off == 0 || new_off == 1 || new_off == 11 || new_off == 12 || new_off == 13) goto ok; pos = ((loff_t) hpfs_de_as_down_as_possible(s, hpfs_inode->i_dno) << 4) + 1; while (pos != new_off) { @@ -51,7 +51,7 @@ ok: mutex_unlock(&i->i_mutex); return new_off; fail: - /*printk("illegal lseek: %016llx\n", new_off);*/ + /*pr_warn("illegal lseek: %016llx\n", new_off);*/ hpfs_unlock(s); mutex_unlock(&i->i_mutex); return -ESPIPE; @@ -127,7 +127,7 @@ static int hpfs_readdir(struct file *file, struct dir_context *ctx) if (ctx->pos == 12) goto out; if (ctx->pos == 3 || ctx->pos == 4 || ctx->pos == 5) { - printk("HPFS: warning: pos==%d\n",(int)ctx->pos); + pr_warn("HPFS: warning: pos==%d\n", (int)ctx->pos); goto out; } if (ctx->pos == 0) { diff --git a/fs/hpfs/dnode.c b/fs/hpfs/dnode.c index 4364b2a02c5d..ff4f898ab952 100644 --- a/fs/hpfs/dnode.c +++ b/fs/hpfs/dnode.c @@ -17,7 +17,7 @@ static loff_t get_pos(struct dnode *d, struct hpfs_dirent *fde) if (de == fde) return ((loff_t) le32_to_cpu(d->self) << 4) | (loff_t)i; i++; } - printk("HPFS: get_pos: not_found\n"); + pr_info("HPFS: get_pos: not_found\n"); return ((loff_t)le32_to_cpu(d->self) << 4) | (loff_t)1; } @@ -32,7 +32,7 @@ void hpfs_add_pos(struct inode *inode, loff_t *pos) if (hpfs_inode->i_rddir_off[i] == pos) return; if (!(i&0x0f)) { if (!(ppos = kmalloc((i+0x11) * sizeof(loff_t*), GFP_NOFS))) { - printk("HPFS: out of memory for position list\n"); + pr_warn("HPFS: out of memory for position list\n"); return; } if (hpfs_inode->i_rddir_off) { @@ -63,7 +63,8 @@ void hpfs_del_pos(struct inode *inode, loff_t *pos) } return; not_f: - /*printk("HPFS: warning: position pointer %p->%08x not found\n", pos, (int)*pos);*/ + /*pr_info("HPFS: warning: position pointer %p->%08x not found\n", + pos, (int)*pos);*/ return; } @@ -92,8 +93,11 @@ static void hpfs_pos_ins(loff_t *p, loff_t d, loff_t c) { if ((*p & ~0x3f) == (d & ~0x3f) && (*p & 0x3f) >= (d & 0x3f)) { int n = (*p & 0x3f) + c; - if (n > 0x3f) printk("HPFS: hpfs_pos_ins: %08x + %d\n", (int)*p, (int)c >> 8); - else *p = (*p & ~0x3f) | n; + if (n > 0x3f) + pr_warn("HPFS: hpfs_pos_ins: %08x + %d\n", + (int)*p, (int)c >> 8); + else + *p = (*p & ~0x3f) | n; } } @@ -101,8 +105,11 @@ static void hpfs_pos_del(loff_t *p, loff_t d, loff_t c) { if ((*p & ~0x3f) == (d & ~0x3f) && (*p & 0x3f) >= (d & 0x3f)) { int n = (*p & 0x3f) - c; - if (n < 1) printk("HPFS: hpfs_pos_ins: %08x - %d\n", (int)*p, (int)c >> 8); - else *p = (*p & ~0x3f) | n; + if (n < 1) + pr_warn("HPFS: hpfs_pos_ins: %08x - %d\n", + (int)*p, (int)c >> 8); + else + *p = (*p & ~0x3f) | n; } } @@ -239,7 +246,7 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno, struct fnode *fnode; int c1, c2 = 0; if (!(nname = kmalloc(256, GFP_NOFS))) { - printk("HPFS: out of memory, can't add to dnode\n"); + pr_warn("HPFS: out of memory, can't add to dnode\n"); return 1; } go_up: @@ -281,7 +288,7 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno, not be any error while splitting dnodes, otherwise the whole directory, not only file we're adding, would be lost. */ - printk("HPFS: out of memory for dnode splitting\n"); + pr_warn("HPFS: out of memory for dnode splitting\n"); hpfs_brelse4(&qbh); kfree(nname); return 1; @@ -597,7 +604,7 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) if (!de_next->down) goto endm; ndown = de_down_pointer(de_next); if (!(de_cp = kmalloc(le16_to_cpu(de->length), GFP_NOFS))) { - printk("HPFS: out of memory for dtree balancing\n"); + pr_warn("HPFS: out of memory for dtree balancing\n"); goto endm; } memcpy(de_cp, de, le16_to_cpu(de->length)); @@ -612,7 +619,8 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) hpfs_brelse4(&qbh1); } hpfs_add_to_dnode(i, ndown, de_cp->name, de_cp->namelen, de_cp, de_cp->down ? de_down_pointer(de_cp) : 0); - /*printk("UP-TO-DNODE: %08x (ndown = %08x, down = %08x, dno = %08x)\n", up, ndown, down, dno);*/ + /*pr_info("UP-TO-DNODE: %08x (ndown = %08x, down = %08x, dno = %08x)\n", + up, ndown, down, dno);*/ dno = up; kfree(de_cp); goto try_it_again; @@ -637,15 +645,15 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) if (!dlp && down) { if (le32_to_cpu(d1->first_free) > 2044) { if (hpfs_sb(i->i_sb)->sb_chk >= 2) { - printk("HPFS: warning: unbalanced dnode tree, see hpfs.txt 4 more info\n"); - printk("HPFS: warning: terminating balancing operation\n"); + pr_warn("HPFS: warning: unbalanced dnode tree, see hpfs.txt 4 more info\n"); + pr_warn("HPFS: warning: terminating balancing operation\n"); } hpfs_brelse4(&qbh1); goto endm; } if (hpfs_sb(i->i_sb)->sb_chk >= 2) { - printk("HPFS: warning: unbalanced dnode tree, see hpfs.txt 4 more info\n"); - printk("HPFS: warning: goin'on\n"); + pr_warn("HPFS: warning: unbalanced dnode tree, see hpfs.txt 4 more info\n"); + pr_warn("HPFS: warning: goin'on\n"); } le16_add_cpu(&del->length, 4); del->down = 1; @@ -659,7 +667,7 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) *(__le32 *) ((void *) del + le16_to_cpu(del->length) - 4) = cpu_to_le32(down); } else goto endm; if (!(de_cp = kmalloc(le16_to_cpu(de_prev->length), GFP_NOFS))) { - printk("HPFS: out of memory for dtree balancing\n"); + pr_warn("HPFS: out of memory for dtree balancing\n"); hpfs_brelse4(&qbh1); goto endm; } @@ -1000,7 +1008,7 @@ struct hpfs_dirent *map_fnode_dirent(struct super_block *s, fnode_secno fno, int d1, d2 = 0; name1 = f->name; if (!(name2 = kmalloc(256, GFP_NOFS))) { - printk("HPFS: out of memory, can't map dirent\n"); + pr_warn("HPFS: out of memory, can't map dirent\n"); return NULL; } if (f->len <= 15) diff --git a/fs/hpfs/ea.c b/fs/hpfs/ea.c index bcaafcd2666a..6ac822ae0dc4 100644 --- a/fs/hpfs/ea.c +++ b/fs/hpfs/ea.c @@ -51,7 +51,7 @@ static char *get_indirect_ea(struct super_block *s, int ano, secno a, int size) { char *ret; if (!(ret = kmalloc(size + 1, GFP_NOFS))) { - printk("HPFS: out of memory for EA\n"); + pr_warn("HPFS: out of memory for EA\n"); return NULL; } if (hpfs_ea_read(s, a, ano, 0, size, ret)) { @@ -139,7 +139,7 @@ char *hpfs_get_ea(struct super_block *s, struct fnode *fnode, char *key, int *si if (ea_indirect(ea)) return get_indirect_ea(s, ea_in_anode(ea), ea_sec(ea), *size = ea_len(ea)); if (!(ret = kmalloc((*size = ea_valuelen(ea)) + 1, GFP_NOFS))) { - printk("HPFS: out of memory for EA\n"); + pr_warn("HPFS: out of memory for EA\n"); return NULL; } memcpy(ret, ea_data(ea), ea_valuelen(ea)); @@ -165,7 +165,7 @@ char *hpfs_get_ea(struct super_block *s, struct fnode *fnode, char *key, int *si if (ea_indirect(ea)) return get_indirect_ea(s, ea_in_anode(ea), ea_sec(ea), *size = ea_len(ea)); if (!(ret = kmalloc((*size = ea_valuelen(ea)) + 1, GFP_NOFS))) { - printk("HPFS: out of memory for EA\n"); + pr_warn("HPFS: out of memory for EA\n"); return NULL; } if (hpfs_ea_read(s, a, ano, pos + 4 + ea->namelen + 1, ea_valuelen(ea), ret)) { diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c index 50a427313835..42c29086c699 100644 --- a/fs/hpfs/inode.c +++ b/fs/hpfs/inode.c @@ -183,7 +183,8 @@ void hpfs_write_inode(struct inode *i) struct inode *parent; if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return; if (hpfs_inode->i_rddir_off && !atomic_read(&i->i_count)) { - if (*hpfs_inode->i_rddir_off) printk("HPFS: write_inode: some position still there\n"); + if (*hpfs_inode->i_rddir_off) + pr_warn("HPFS: write_inode: some position still there\n"); kfree(hpfs_inode->i_rddir_off); hpfs_inode->i_rddir_off = NULL; } diff --git a/fs/hpfs/map.c b/fs/hpfs/map.c index 3aa66ae1031e..398d7b1b99c8 100644 --- a/fs/hpfs/map.c +++ b/fs/hpfs/map.c @@ -65,12 +65,13 @@ unsigned char *hpfs_load_code_page(struct super_block *s, secno cps) struct code_page_directory *cp = hpfs_map_sector(s, cps, &bh, 0); if (!cp) return NULL; if (le32_to_cpu(cp->magic) != CP_DIR_MAGIC) { - printk("HPFS: Code page directory magic doesn't match (magic = %08x)\n", le32_to_cpu(cp->magic)); + pr_warn("HPFS: Code page directory magic doesn't match (magic = %08x)\n", + le32_to_cpu(cp->magic)); brelse(bh); return NULL; } if (!le32_to_cpu(cp->n_code_pages)) { - printk("HPFS: n_code_pages == 0\n"); + pr_warn("HPFS: n_code_pages == 0\n"); brelse(bh); return NULL; } @@ -79,19 +80,19 @@ unsigned char *hpfs_load_code_page(struct super_block *s, secno cps) brelse(bh); if (cpi >= 3) { - printk("HPFS: Code page index out of array\n"); + pr_warn("HPFS: Code page index out of array\n"); return NULL; } if (!(cpd = hpfs_map_sector(s, cpds, &bh, 0))) return NULL; if (le16_to_cpu(cpd->offs[cpi]) > 0x178) { - printk("HPFS: Code page index out of sector\n"); + pr_warn("HPFS: Code page index out of sector\n"); brelse(bh); return NULL; } ptr = (unsigned char *)cpd + le16_to_cpu(cpd->offs[cpi]) + 6; if (!(cp_table = kmalloc(256, GFP_KERNEL))) { - printk("HPFS: out of memory for code page table\n"); + pr_warn("HPFS: out of memory for code page table\n"); brelse(bh); return NULL; } @@ -114,7 +115,7 @@ __le32 *hpfs_load_bitmap_directory(struct super_block *s, secno bmp) int i; __le32 *b; if (!(b = kmalloc(n * 512, GFP_KERNEL))) { - printk("HPFS: can't allocate memory for bitmap directory\n"); + pr_warn("HPFS: can't allocate memory for bitmap directory\n"); return NULL; } for (i=0;isb_chk >= 2) if (hpfs_is_name_long(from, len) != lng) { - printk("HPFS: Long name flag mismatch - name "); - for (i=0; isb_cp_table,from[i]); diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c index 1b39afdd86fd..d11e6ed98972 100644 --- a/fs/hpfs/namei.c +++ b/fs/hpfs/namei.c @@ -404,7 +404,7 @@ again: d_rehash(dentry); } else { struct iattr newattrs; - /*printk("HPFS: truncating file before delete.\n");*/ + /*pr_info("HPFS: truncating file before delete.\n");*/ newattrs.ia_size = 0; newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME; err = notify_change(dentry, &newattrs, NULL); diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c index fe3463a43236..e229b3f187cf 100644 --- a/fs/hpfs/super.c +++ b/fs/hpfs/super.c @@ -62,22 +62,26 @@ void hpfs_error(struct super_block *s, const char *fmt, ...) vsnprintf(err_buf, sizeof(err_buf), fmt, args); va_end(args); - printk("HPFS: filesystem error: %s", err_buf); + pr_err("HPFS: filesystem error: %s", err_buf); if (!hpfs_sb(s)->sb_was_error) { if (hpfs_sb(s)->sb_err == 2) { - printk("; crashing the system because you wanted it\n"); + pr_cont("; crashing the system because you wanted it\n"); mark_dirty(s, 0); panic("HPFS panic"); } else if (hpfs_sb(s)->sb_err == 1) { - if (s->s_flags & MS_RDONLY) printk("; already mounted read-only\n"); + if (s->s_flags & MS_RDONLY) + pr_cont("; already mounted read-only\n"); else { - printk("; remounting read-only\n"); + pr_cont("; remounting read-only\n"); mark_dirty(s, 0); s->s_flags |= MS_RDONLY; } - } else if (s->s_flags & MS_RDONLY) printk("; going on - but anything won't be destroyed because it's read-only\n"); - else printk("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n"); - } else printk("\n"); + } else if (s->s_flags & MS_RDONLY) + pr_cont("; going on - but anything won't be destroyed because it's read-only\n"); + else + pr_cont("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n"); + } else + pr_cont("\n"); hpfs_sb(s)->sb_was_error = 1; } @@ -292,7 +296,7 @@ static int parse_opts(char *opts, kuid_t *uid, kgid_t *gid, umode_t *umask, if (!opts) return 1; - /*printk("Parsing opts: '%s'\n",opts);*/ + /*pr_info("Parsing opts: '%s'\n",opts);*/ while ((p = strsep(&opts, ",")) != NULL) { substring_t args[MAX_OPT_ARGS]; @@ -387,7 +391,7 @@ static int parse_opts(char *opts, kuid_t *uid, kgid_t *gid, umode_t *umask, static inline void hpfs_help(void) { - printk("\n\ + pr_info("\n\ HPFS filesystem options:\n\ help do not mount and display this text\n\ uid=xxx set uid of files that don't have uid specified in eas\n\ @@ -434,7 +438,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data) if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase, &eas, &chk, &errs, &chkdsk, ×hift))) { - printk("HPFS: bad mount options.\n"); + pr_warn("HPFS: bad mount options.\n"); goto out_err; } if (o == 2) { @@ -442,7 +446,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data) goto out_err; } if (timeshift != sbi->sb_timeshift) { - printk("HPFS: timeshift can't be changed using remount.\n"); + pr_warn("HPFS: timeshift can't be changed using remount.\n"); goto out_err; } @@ -523,7 +527,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase, &eas, &chk, &errs, &chkdsk, ×hift))) { - printk("HPFS: bad mount options.\n"); + pr_warn("HPFS: bad mount options.\n"); goto bail0; } if (o==2) { @@ -542,16 +546,17 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) if (/*le16_to_cpu(bootblock->magic) != BB_MAGIC ||*/ le32_to_cpu(superblock->magic) != SB_MAGIC || le32_to_cpu(spareblock->magic) != SP_MAGIC) { - if (!silent) printk("HPFS: Bad magic ... probably not HPFS\n"); + if (!silent) + pr_warn("HPFS: Bad magic ... probably not HPFS\n"); goto bail4; } /* Check version */ if (!(s->s_flags & MS_RDONLY) && superblock->funcversion != 2 && superblock->funcversion != 3) { - printk("HPFS: Bad version %d,%d. Mount readonly to go around\n", + pr_warn("HPFS: Bad version %d,%d. Mount readonly to go around\n", (int)superblock->version, (int)superblock->funcversion); - printk("HPFS: please try recent version of HPFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi and if it still can't understand this format, contact author - mikulas@artax.karlin.mff.cuni.cz\n"); + pr_warn("HPFS: please try recent version of HPFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi and if it still can't understand this format, contact author - mikulas@artax.karlin.mff.cuni.cz\n"); goto bail4; } @@ -597,7 +602,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) /* Check for general fs errors*/ if (spareblock->dirty && !spareblock->old_wrote) { if (errs == 2) { - printk("HPFS: Improperly stopped, not mounted\n"); + pr_warn("HPFS: Improperly stopped, not mounted\n"); goto bail4; } hpfs_error(s, "improperly stopped"); @@ -611,22 +616,25 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) if (spareblock->hotfixes_used || spareblock->n_spares_used) { if (errs >= 2) { - printk("HPFS: Hotfixes not supported here, try chkdsk\n"); + pr_warn("HPFS: Hotfixes not supported here, try chkdsk\n"); mark_dirty(s, 0); goto bail4; } hpfs_error(s, "hotfixes not supported here, try chkdsk"); - if (errs == 0) printk("HPFS: Proceeding, but your filesystem will be probably corrupted by this driver...\n"); - else printk("HPFS: This driver may read bad files or crash when operating on disk with hotfixes.\n"); + if (errs == 0) + pr_warn("HPFS: Proceeding, but your filesystem will be probably corrupted by this driver...\n"); + else + pr_warn("HPFS: This driver may read bad files or crash when operating on disk with hotfixes.\n"); } if (le32_to_cpu(spareblock->n_dnode_spares) != le32_to_cpu(spareblock->n_dnode_spares_free)) { if (errs >= 2) { - printk("HPFS: Spare dnodes used, try chkdsk\n"); + pr_warn("HPFS: Spare dnodes used, try chkdsk\n"); mark_dirty(s, 0); goto bail4; } hpfs_error(s, "warning: spare dnodes used, try chkdsk"); - if (errs == 0) printk("HPFS: Proceeding, but your filesystem could be corrupted if you delete files or directories\n"); + if (errs == 0) + pr_warn("HPFS: Proceeding, but your filesystem could be corrupted if you delete files or directories\n"); } if (chk) { unsigned a; @@ -645,12 +653,13 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) goto bail4; } sbi->sb_dirband_size = a; - } else printk("HPFS: You really don't want any checks? You are crazy...\n"); + } else + pr_warn("HPFS: You really don't want any checks? You are crazy...\n"); /* Load code page table */ if (le32_to_cpu(spareblock->n_code_pages)) if (!(sbi->sb_cp_table = hpfs_load_code_page(s, le32_to_cpu(spareblock->code_page_dir)))) - printk("HPFS: Warning: code page support is disabled\n"); + pr_warn("HPFS: Warning: code page support is disabled\n"); brelse(bh2); brelse(bh1); -- cgit v1.2.3 From 14da17f9c4a880e3418f7f04071df3cb2e8636e8 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:34 -0700 Subject: fs/hpfs: use pr_fmt for logging Also remove redundant level names (warning:...) Signed-off-by: Fabian Frederick Cc: Mikulas Patocka Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hpfs/buffer.c | 12 ++++++------ fs/hpfs/dir.c | 2 +- fs/hpfs/dnode.c | 28 ++++++++++++++-------------- fs/hpfs/ea.c | 6 +++--- fs/hpfs/hpfs_fn.h | 5 +++++ fs/hpfs/inode.c | 2 +- fs/hpfs/map.c | 14 +++++++------- fs/hpfs/name.c | 6 +++--- fs/hpfs/namei.c | 2 +- fs/hpfs/super.c | 30 +++++++++++++++--------------- 10 files changed, 56 insertions(+), 51 deletions(-) diff --git a/fs/hpfs/buffer.c b/fs/hpfs/buffer.c index 4b61be32a91d..e5f62d4cebd8 100644 --- a/fs/hpfs/buffer.c +++ b/fs/hpfs/buffer.c @@ -55,7 +55,7 @@ void *hpfs_map_sector(struct super_block *s, unsigned secno, struct buffer_head if (bh != NULL) return bh->b_data; else { - pr_warn("HPFS: hpfs_map_sector: read error\n"); + pr_warn("hpfs_map_sector: read error\n"); return NULL; } } @@ -76,7 +76,7 @@ void *hpfs_get_sector(struct super_block *s, unsigned secno, struct buffer_head set_buffer_uptodate(bh); return bh->b_data; } else { - pr_warn("HPFS: hpfs_get_sector: getblk failed\n"); + pr_warn("hpfs_get_sector: getblk failed\n"); return NULL; } } @@ -93,7 +93,7 @@ void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffe cond_resched(); if (secno & 3) { - pr_warn("HPFS: hpfs_map_4sectors: unaligned read\n"); + pr_warn("hpfs_map_4sectors: unaligned read\n"); return NULL; } @@ -112,7 +112,7 @@ void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffe qbh->data = data = kmalloc(2048, GFP_NOFS); if (!data) { - pr_warn("HPFS: hpfs_map_4sectors: out of memory\n"); + pr_warn("hpfs_map_4sectors: out of memory\n"); goto bail4; } @@ -145,7 +145,7 @@ void *hpfs_get_4sectors(struct super_block *s, unsigned secno, hpfs_lock_assert(s); if (secno & 3) { - pr_warn("HPFS: hpfs_get_4sectors: unaligned read\n"); + pr_warn("hpfs_get_4sectors: unaligned read\n"); return NULL; } @@ -161,7 +161,7 @@ void *hpfs_get_4sectors(struct super_block *s, unsigned secno, } if (!(qbh->data = kmalloc(2048, GFP_NOFS))) { - pr_warn("HPFS: hpfs_get_4sectors: out of memory\n"); + pr_warn("hpfs_get_4sectors: out of memory\n"); goto bail4; } return qbh->data; diff --git a/fs/hpfs/dir.c b/fs/hpfs/dir.c index 11ea93637e28..3377eba73c13 100644 --- a/fs/hpfs/dir.c +++ b/fs/hpfs/dir.c @@ -127,7 +127,7 @@ static int hpfs_readdir(struct file *file, struct dir_context *ctx) if (ctx->pos == 12) goto out; if (ctx->pos == 3 || ctx->pos == 4 || ctx->pos == 5) { - pr_warn("HPFS: warning: pos==%d\n", (int)ctx->pos); + pr_warn("pos==%d\n", (int)ctx->pos); goto out; } if (ctx->pos == 0) { diff --git a/fs/hpfs/dnode.c b/fs/hpfs/dnode.c index ff4f898ab952..69554e208b26 100644 --- a/fs/hpfs/dnode.c +++ b/fs/hpfs/dnode.c @@ -17,7 +17,7 @@ static loff_t get_pos(struct dnode *d, struct hpfs_dirent *fde) if (de == fde) return ((loff_t) le32_to_cpu(d->self) << 4) | (loff_t)i; i++; } - pr_info("HPFS: get_pos: not_found\n"); + pr_info("get_pos: not_found\n"); return ((loff_t)le32_to_cpu(d->self) << 4) | (loff_t)1; } @@ -32,7 +32,7 @@ void hpfs_add_pos(struct inode *inode, loff_t *pos) if (hpfs_inode->i_rddir_off[i] == pos) return; if (!(i&0x0f)) { if (!(ppos = kmalloc((i+0x11) * sizeof(loff_t*), GFP_NOFS))) { - pr_warn("HPFS: out of memory for position list\n"); + pr_warn("out of memory for position list\n"); return; } if (hpfs_inode->i_rddir_off) { @@ -63,7 +63,7 @@ void hpfs_del_pos(struct inode *inode, loff_t *pos) } return; not_f: - /*pr_info("HPFS: warning: position pointer %p->%08x not found\n", + /*pr_warn("position pointer %p->%08x not found\n", pos, (int)*pos);*/ return; } @@ -94,7 +94,7 @@ static void hpfs_pos_ins(loff_t *p, loff_t d, loff_t c) if ((*p & ~0x3f) == (d & ~0x3f) && (*p & 0x3f) >= (d & 0x3f)) { int n = (*p & 0x3f) + c; if (n > 0x3f) - pr_warn("HPFS: hpfs_pos_ins: %08x + %d\n", + pr_warn("hpfs_pos_ins: %08x + %d\n", (int)*p, (int)c >> 8); else *p = (*p & ~0x3f) | n; @@ -106,7 +106,7 @@ static void hpfs_pos_del(loff_t *p, loff_t d, loff_t c) if ((*p & ~0x3f) == (d & ~0x3f) && (*p & 0x3f) >= (d & 0x3f)) { int n = (*p & 0x3f) - c; if (n < 1) - pr_warn("HPFS: hpfs_pos_ins: %08x - %d\n", + pr_warn("hpfs_pos_ins: %08x - %d\n", (int)*p, (int)c >> 8); else *p = (*p & ~0x3f) | n; @@ -246,7 +246,7 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno, struct fnode *fnode; int c1, c2 = 0; if (!(nname = kmalloc(256, GFP_NOFS))) { - pr_warn("HPFS: out of memory, can't add to dnode\n"); + pr_warn("out of memory, can't add to dnode\n"); return 1; } go_up: @@ -288,7 +288,7 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno, not be any error while splitting dnodes, otherwise the whole directory, not only file we're adding, would be lost. */ - pr_warn("HPFS: out of memory for dnode splitting\n"); + pr_warn("out of memory for dnode splitting\n"); hpfs_brelse4(&qbh); kfree(nname); return 1; @@ -604,7 +604,7 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) if (!de_next->down) goto endm; ndown = de_down_pointer(de_next); if (!(de_cp = kmalloc(le16_to_cpu(de->length), GFP_NOFS))) { - pr_warn("HPFS: out of memory for dtree balancing\n"); + pr_warn("out of memory for dtree balancing\n"); goto endm; } memcpy(de_cp, de, le16_to_cpu(de->length)); @@ -645,15 +645,15 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) if (!dlp && down) { if (le32_to_cpu(d1->first_free) > 2044) { if (hpfs_sb(i->i_sb)->sb_chk >= 2) { - pr_warn("HPFS: warning: unbalanced dnode tree, see hpfs.txt 4 more info\n"); - pr_warn("HPFS: warning: terminating balancing operation\n"); + pr_warn("unbalanced dnode tree, see hpfs.txt 4 more info\n"); + pr_warn("terminating balancing operation\n"); } hpfs_brelse4(&qbh1); goto endm; } if (hpfs_sb(i->i_sb)->sb_chk >= 2) { - pr_warn("HPFS: warning: unbalanced dnode tree, see hpfs.txt 4 more info\n"); - pr_warn("HPFS: warning: goin'on\n"); + pr_warn("unbalanced dnode tree, see hpfs.txt 4 more info\n"); + pr_warn("goin'on\n"); } le16_add_cpu(&del->length, 4); del->down = 1; @@ -667,7 +667,7 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) *(__le32 *) ((void *) del + le16_to_cpu(del->length) - 4) = cpu_to_le32(down); } else goto endm; if (!(de_cp = kmalloc(le16_to_cpu(de_prev->length), GFP_NOFS))) { - pr_warn("HPFS: out of memory for dtree balancing\n"); + pr_warn("out of memory for dtree balancing\n"); hpfs_brelse4(&qbh1); goto endm; } @@ -1008,7 +1008,7 @@ struct hpfs_dirent *map_fnode_dirent(struct super_block *s, fnode_secno fno, int d1, d2 = 0; name1 = f->name; if (!(name2 = kmalloc(256, GFP_NOFS))) { - pr_warn("HPFS: out of memory, can't map dirent\n"); + pr_warn("out of memory, can't map dirent\n"); return NULL; } if (f->len <= 15) diff --git a/fs/hpfs/ea.c b/fs/hpfs/ea.c index 6ac822ae0dc4..817805975457 100644 --- a/fs/hpfs/ea.c +++ b/fs/hpfs/ea.c @@ -51,7 +51,7 @@ static char *get_indirect_ea(struct super_block *s, int ano, secno a, int size) { char *ret; if (!(ret = kmalloc(size + 1, GFP_NOFS))) { - pr_warn("HPFS: out of memory for EA\n"); + pr_warn("out of memory for EA\n"); return NULL; } if (hpfs_ea_read(s, a, ano, 0, size, ret)) { @@ -139,7 +139,7 @@ char *hpfs_get_ea(struct super_block *s, struct fnode *fnode, char *key, int *si if (ea_indirect(ea)) return get_indirect_ea(s, ea_in_anode(ea), ea_sec(ea), *size = ea_len(ea)); if (!(ret = kmalloc((*size = ea_valuelen(ea)) + 1, GFP_NOFS))) { - pr_warn("HPFS: out of memory for EA\n"); + pr_warn("out of memory for EA\n"); return NULL; } memcpy(ret, ea_data(ea), ea_valuelen(ea)); @@ -165,7 +165,7 @@ char *hpfs_get_ea(struct super_block *s, struct fnode *fnode, char *key, int *si if (ea_indirect(ea)) return get_indirect_ea(s, ea_in_anode(ea), ea_sec(ea), *size = ea_len(ea)); if (!(ret = kmalloc((*size = ea_valuelen(ea)) + 1, GFP_NOFS))) { - pr_warn("HPFS: out of memory for EA\n"); + pr_warn("out of memory for EA\n"); return NULL; } if (hpfs_ea_read(s, a, ano, pos + 4 + ea->namelen + 1, ea_valuelen(ea), ret)) { diff --git a/fs/hpfs/hpfs_fn.h b/fs/hpfs/hpfs_fn.h index 3ba49c080e42..b63b75fa00e7 100644 --- a/fs/hpfs/hpfs_fn.h +++ b/fs/hpfs/hpfs_fn.h @@ -8,6 +8,11 @@ //#define DBG //#define DEBUG_LOCKS +#ifdef pr_fmt +#undef pr_fmt +#endif + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include #include diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c index 42c29086c699..89e5a0b75ea7 100644 --- a/fs/hpfs/inode.c +++ b/fs/hpfs/inode.c @@ -184,7 +184,7 @@ void hpfs_write_inode(struct inode *i) if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return; if (hpfs_inode->i_rddir_off && !atomic_read(&i->i_count)) { if (*hpfs_inode->i_rddir_off) - pr_warn("HPFS: write_inode: some position still there\n"); + pr_warn("write_inode: some position still there\n"); kfree(hpfs_inode->i_rddir_off); hpfs_inode->i_rddir_off = NULL; } diff --git a/fs/hpfs/map.c b/fs/hpfs/map.c index 398d7b1b99c8..6ac8f7a74efc 100644 --- a/fs/hpfs/map.c +++ b/fs/hpfs/map.c @@ -65,13 +65,13 @@ unsigned char *hpfs_load_code_page(struct super_block *s, secno cps) struct code_page_directory *cp = hpfs_map_sector(s, cps, &bh, 0); if (!cp) return NULL; if (le32_to_cpu(cp->magic) != CP_DIR_MAGIC) { - pr_warn("HPFS: Code page directory magic doesn't match (magic = %08x)\n", + pr_warn("Code page directory magic doesn't match (magic = %08x)\n", le32_to_cpu(cp->magic)); brelse(bh); return NULL; } if (!le32_to_cpu(cp->n_code_pages)) { - pr_warn("HPFS: n_code_pages == 0\n"); + pr_warn("n_code_pages == 0\n"); brelse(bh); return NULL; } @@ -80,19 +80,19 @@ unsigned char *hpfs_load_code_page(struct super_block *s, secno cps) brelse(bh); if (cpi >= 3) { - pr_warn("HPFS: Code page index out of array\n"); + pr_warn("Code page index out of array\n"); return NULL; } if (!(cpd = hpfs_map_sector(s, cpds, &bh, 0))) return NULL; if (le16_to_cpu(cpd->offs[cpi]) > 0x178) { - pr_warn("HPFS: Code page index out of sector\n"); + pr_warn("Code page index out of sector\n"); brelse(bh); return NULL; } ptr = (unsigned char *)cpd + le16_to_cpu(cpd->offs[cpi]) + 6; if (!(cp_table = kmalloc(256, GFP_KERNEL))) { - pr_warn("HPFS: out of memory for code page table\n"); + pr_warn("out of memory for code page table\n"); brelse(bh); return NULL; } @@ -115,7 +115,7 @@ __le32 *hpfs_load_bitmap_directory(struct super_block *s, secno bmp) int i; __le32 *b; if (!(b = kmalloc(n * 512, GFP_KERNEL))) { - pr_warn("HPFS: can't allocate memory for bitmap directory\n"); + pr_warn("can't allocate memory for bitmap directory\n"); return NULL; } for (i=0;isb_chk >= 2) if (hpfs_is_name_long(from, len) != lng) { - pr_warn("HPFS: Long name flag mismatch - name "); + pr_warn("Long name flag mismatch - name "); for (i = 0; i < len; i++) pr_cont("%c", from[i]); pr_cont(" misidentified as %s.\n", lng ? "short" : "long"); - pr_warn("HPFS: It's nothing serious. It could happen because of bug in OS/2.\nHPFS: Set checks=normal to disable this message.\n"); + pr_warn("It's nothing serious. It could happen because of bug in OS/2.\nSet checks=normal to disable this message.\n"); } if (!lc) return from; if (!(to = kmalloc(len, GFP_KERNEL))) { - pr_warn("HPFS: can't allocate memory for name conversion buffer\n"); + pr_warn("can't allocate memory for name conversion buffer\n"); return from; } for (i = 0; i < len; i++) to[i] = locase(hpfs_sb(s)->sb_cp_table,from[i]); diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c index d11e6ed98972..bdbc2c3080a4 100644 --- a/fs/hpfs/namei.c +++ b/fs/hpfs/namei.c @@ -404,7 +404,7 @@ again: d_rehash(dentry); } else { struct iattr newattrs; - /*pr_info("HPFS: truncating file before delete.\n");*/ + /*pr_info("truncating file before delete.\n");*/ newattrs.ia_size = 0; newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME; err = notify_change(dentry, &newattrs, NULL); diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c index e229b3f187cf..92fd3cebeba4 100644 --- a/fs/hpfs/super.c +++ b/fs/hpfs/super.c @@ -62,7 +62,7 @@ void hpfs_error(struct super_block *s, const char *fmt, ...) vsnprintf(err_buf, sizeof(err_buf), fmt, args); va_end(args); - pr_err("HPFS: filesystem error: %s", err_buf); + pr_err("filesystem error: %s", err_buf); if (!hpfs_sb(s)->sb_was_error) { if (hpfs_sb(s)->sb_err == 2) { pr_cont("; crashing the system because you wanted it\n"); @@ -438,7 +438,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data) if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase, &eas, &chk, &errs, &chkdsk, ×hift))) { - pr_warn("HPFS: bad mount options.\n"); + pr_warn("bad mount options.\n"); goto out_err; } if (o == 2) { @@ -446,7 +446,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data) goto out_err; } if (timeshift != sbi->sb_timeshift) { - pr_warn("HPFS: timeshift can't be changed using remount.\n"); + pr_warn("timeshift can't be changed using remount.\n"); goto out_err; } @@ -527,7 +527,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase, &eas, &chk, &errs, &chkdsk, ×hift))) { - pr_warn("HPFS: bad mount options.\n"); + pr_warn("bad mount options.\n"); goto bail0; } if (o==2) { @@ -547,16 +547,16 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) ||*/ le32_to_cpu(superblock->magic) != SB_MAGIC || le32_to_cpu(spareblock->magic) != SP_MAGIC) { if (!silent) - pr_warn("HPFS: Bad magic ... probably not HPFS\n"); + pr_warn("Bad magic ... probably not HPFS\n"); goto bail4; } /* Check version */ if (!(s->s_flags & MS_RDONLY) && superblock->funcversion != 2 && superblock->funcversion != 3) { - pr_warn("HPFS: Bad version %d,%d. Mount readonly to go around\n", + pr_warn("Bad version %d,%d. Mount readonly to go around\n", (int)superblock->version, (int)superblock->funcversion); - pr_warn("HPFS: please try recent version of HPFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi and if it still can't understand this format, contact author - mikulas@artax.karlin.mff.cuni.cz\n"); + pr_warn("please try recent version of HPFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi and if it still can't understand this format, contact author - mikulas@artax.karlin.mff.cuni.cz\n"); goto bail4; } @@ -602,7 +602,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) /* Check for general fs errors*/ if (spareblock->dirty && !spareblock->old_wrote) { if (errs == 2) { - pr_warn("HPFS: Improperly stopped, not mounted\n"); + pr_warn("Improperly stopped, not mounted\n"); goto bail4; } hpfs_error(s, "improperly stopped"); @@ -616,25 +616,25 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) if (spareblock->hotfixes_used || spareblock->n_spares_used) { if (errs >= 2) { - pr_warn("HPFS: Hotfixes not supported here, try chkdsk\n"); + pr_warn("Hotfixes not supported here, try chkdsk\n"); mark_dirty(s, 0); goto bail4; } hpfs_error(s, "hotfixes not supported here, try chkdsk"); if (errs == 0) - pr_warn("HPFS: Proceeding, but your filesystem will be probably corrupted by this driver...\n"); + pr_warn("Proceeding, but your filesystem will be probably corrupted by this driver...\n"); else - pr_warn("HPFS: This driver may read bad files or crash when operating on disk with hotfixes.\n"); + pr_warn("This driver may read bad files or crash when operating on disk with hotfixes.\n"); } if (le32_to_cpu(spareblock->n_dnode_spares) != le32_to_cpu(spareblock->n_dnode_spares_free)) { if (errs >= 2) { - pr_warn("HPFS: Spare dnodes used, try chkdsk\n"); + pr_warn("Spare dnodes used, try chkdsk\n"); mark_dirty(s, 0); goto bail4; } hpfs_error(s, "warning: spare dnodes used, try chkdsk"); if (errs == 0) - pr_warn("HPFS: Proceeding, but your filesystem could be corrupted if you delete files or directories\n"); + pr_warn("Proceeding, but your filesystem could be corrupted if you delete files or directories\n"); } if (chk) { unsigned a; @@ -654,12 +654,12 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) } sbi->sb_dirband_size = a; } else - pr_warn("HPFS: You really don't want any checks? You are crazy...\n"); + pr_warn("You really don't want any checks? You are crazy...\n"); /* Load code page table */ if (le32_to_cpu(spareblock->n_code_pages)) if (!(sbi->sb_cp_table = hpfs_load_code_page(s, le32_to_cpu(spareblock->code_page_dir)))) - pr_warn("HPFS: Warning: code page support is disabled\n"); + pr_warn("code page support is disabled\n"); brelse(bh2); brelse(bh1); -- cgit v1.2.3 From 1749a10e02a9c6ed1a5c0a2860fb9ed132f2cc42 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:35 -0700 Subject: fs/hpfs: use __func__ for logging Normalize function display fx() using __func__ Signed-off-by: Fabian Frederick Cc: Mikulas Patocka Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hpfs/buffer.c | 12 ++++++------ fs/hpfs/dnode.c | 12 ++++++------ 2 files changed, 12 insertions(+), 12 deletions(-) diff --git a/fs/hpfs/buffer.c b/fs/hpfs/buffer.c index e5f62d4cebd8..07e0b0fc4548 100644 --- a/fs/hpfs/buffer.c +++ b/fs/hpfs/buffer.c @@ -55,7 +55,7 @@ void *hpfs_map_sector(struct super_block *s, unsigned secno, struct buffer_head if (bh != NULL) return bh->b_data; else { - pr_warn("hpfs_map_sector: read error\n"); + pr_warn("%s(): read error\n", __func__); return NULL; } } @@ -76,7 +76,7 @@ void *hpfs_get_sector(struct super_block *s, unsigned secno, struct buffer_head set_buffer_uptodate(bh); return bh->b_data; } else { - pr_warn("hpfs_get_sector: getblk failed\n"); + pr_warn("%s(): getblk failed\n", __func__); return NULL; } } @@ -93,7 +93,7 @@ void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffe cond_resched(); if (secno & 3) { - pr_warn("hpfs_map_4sectors: unaligned read\n"); + pr_warn("%s(): unaligned read\n", __func__); return NULL; } @@ -112,7 +112,7 @@ void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffe qbh->data = data = kmalloc(2048, GFP_NOFS); if (!data) { - pr_warn("hpfs_map_4sectors: out of memory\n"); + pr_warn("%s(): out of memory\n", __func__); goto bail4; } @@ -145,7 +145,7 @@ void *hpfs_get_4sectors(struct super_block *s, unsigned secno, hpfs_lock_assert(s); if (secno & 3) { - pr_warn("hpfs_get_4sectors: unaligned read\n"); + pr_warn("%s(): unaligned read\n", __func__); return NULL; } @@ -161,7 +161,7 @@ void *hpfs_get_4sectors(struct super_block *s, unsigned secno, } if (!(qbh->data = kmalloc(2048, GFP_NOFS))) { - pr_warn("hpfs_get_4sectors: out of memory\n"); + pr_warn("%s(): out of memory\n", __func__); goto bail4; } return qbh->data; diff --git a/fs/hpfs/dnode.c b/fs/hpfs/dnode.c index 69554e208b26..d10c5e91c5b2 100644 --- a/fs/hpfs/dnode.c +++ b/fs/hpfs/dnode.c @@ -17,7 +17,7 @@ static loff_t get_pos(struct dnode *d, struct hpfs_dirent *fde) if (de == fde) return ((loff_t) le32_to_cpu(d->self) << 4) | (loff_t)i; i++; } - pr_info("get_pos: not_found\n"); + pr_info("%s(): not_found\n", __func__); return ((loff_t)le32_to_cpu(d->self) << 4) | (loff_t)1; } @@ -94,8 +94,8 @@ static void hpfs_pos_ins(loff_t *p, loff_t d, loff_t c) if ((*p & ~0x3f) == (d & ~0x3f) && (*p & 0x3f) >= (d & 0x3f)) { int n = (*p & 0x3f) + c; if (n > 0x3f) - pr_warn("hpfs_pos_ins: %08x + %d\n", - (int)*p, (int)c >> 8); + pr_warn("%s(): %08x + %d\n", + __func__, (int)*p, (int)c >> 8); else *p = (*p & ~0x3f) | n; } @@ -106,8 +106,8 @@ static void hpfs_pos_del(loff_t *p, loff_t d, loff_t c) if ((*p & ~0x3f) == (d & ~0x3f) && (*p & 0x3f) >= (d & 0x3f)) { int n = (*p & 0x3f) - c; if (n < 1) - pr_warn("hpfs_pos_ins: %08x - %d\n", - (int)*p, (int)c >> 8); + pr_warn("%s(): %08x - %d\n", + __func__, (int)*p, (int)c >> 8); else *p = (*p & ~0x3f) | n; } @@ -251,7 +251,7 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno, } go_up: if (namelen >= 256) { - hpfs_error(i->i_sb, "hpfs_add_to_dnode: namelen == %d", namelen); + hpfs_error(i->i_sb, "%s(): namelen == %d", __func__, namelen); kfree(nd); kfree(nname); return 1; -- cgit v1.2.3 From a19189e5535ed8fd191d8989fc39da1637cfa224 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:36 -0700 Subject: fs/hpfs: increase pr_warn level This patch applies a suggestion by Mikulas Patocka asking to increase all pr_warn without commented ones to pr_err Signed-off-by: Fabian Frederick Cc: Mikulas Patocka Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hpfs/buffer.c | 12 ++++++------ fs/hpfs/dir.c | 2 +- fs/hpfs/dnode.c | 24 ++++++++++++------------ fs/hpfs/ea.c | 6 +++--- fs/hpfs/inode.c | 2 +- fs/hpfs/map.c | 14 +++++++------- fs/hpfs/name.c | 6 +++--- fs/hpfs/super.c | 28 ++++++++++++++-------------- 8 files changed, 47 insertions(+), 47 deletions(-) diff --git a/fs/hpfs/buffer.c b/fs/hpfs/buffer.c index 07e0b0fc4548..8057fe4e6574 100644 --- a/fs/hpfs/buffer.c +++ b/fs/hpfs/buffer.c @@ -55,7 +55,7 @@ void *hpfs_map_sector(struct super_block *s, unsigned secno, struct buffer_head if (bh != NULL) return bh->b_data; else { - pr_warn("%s(): read error\n", __func__); + pr_err("%s(): read error\n", __func__); return NULL; } } @@ -76,7 +76,7 @@ void *hpfs_get_sector(struct super_block *s, unsigned secno, struct buffer_head set_buffer_uptodate(bh); return bh->b_data; } else { - pr_warn("%s(): getblk failed\n", __func__); + pr_err("%s(): getblk failed\n", __func__); return NULL; } } @@ -93,7 +93,7 @@ void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffe cond_resched(); if (secno & 3) { - pr_warn("%s(): unaligned read\n", __func__); + pr_err("%s(): unaligned read\n", __func__); return NULL; } @@ -112,7 +112,7 @@ void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffe qbh->data = data = kmalloc(2048, GFP_NOFS); if (!data) { - pr_warn("%s(): out of memory\n", __func__); + pr_err("%s(): out of memory\n", __func__); goto bail4; } @@ -145,7 +145,7 @@ void *hpfs_get_4sectors(struct super_block *s, unsigned secno, hpfs_lock_assert(s); if (secno & 3) { - pr_warn("%s(): unaligned read\n", __func__); + pr_err("%s(): unaligned read\n", __func__); return NULL; } @@ -161,7 +161,7 @@ void *hpfs_get_4sectors(struct super_block *s, unsigned secno, } if (!(qbh->data = kmalloc(2048, GFP_NOFS))) { - pr_warn("%s(): out of memory\n", __func__); + pr_err("%s(): out of memory\n", __func__); goto bail4; } return qbh->data; diff --git a/fs/hpfs/dir.c b/fs/hpfs/dir.c index 3377eba73c13..2a8e07425de0 100644 --- a/fs/hpfs/dir.c +++ b/fs/hpfs/dir.c @@ -127,7 +127,7 @@ static int hpfs_readdir(struct file *file, struct dir_context *ctx) if (ctx->pos == 12) goto out; if (ctx->pos == 3 || ctx->pos == 4 || ctx->pos == 5) { - pr_warn("pos==%d\n", (int)ctx->pos); + pr_err("pos==%d\n", (int)ctx->pos); goto out; } if (ctx->pos == 0) { diff --git a/fs/hpfs/dnode.c b/fs/hpfs/dnode.c index d10c5e91c5b2..f36fc010fccb 100644 --- a/fs/hpfs/dnode.c +++ b/fs/hpfs/dnode.c @@ -32,7 +32,7 @@ void hpfs_add_pos(struct inode *inode, loff_t *pos) if (hpfs_inode->i_rddir_off[i] == pos) return; if (!(i&0x0f)) { if (!(ppos = kmalloc((i+0x11) * sizeof(loff_t*), GFP_NOFS))) { - pr_warn("out of memory for position list\n"); + pr_err("out of memory for position list\n"); return; } if (hpfs_inode->i_rddir_off) { @@ -94,7 +94,7 @@ static void hpfs_pos_ins(loff_t *p, loff_t d, loff_t c) if ((*p & ~0x3f) == (d & ~0x3f) && (*p & 0x3f) >= (d & 0x3f)) { int n = (*p & 0x3f) + c; if (n > 0x3f) - pr_warn("%s(): %08x + %d\n", + pr_err("%s(): %08x + %d\n", __func__, (int)*p, (int)c >> 8); else *p = (*p & ~0x3f) | n; @@ -106,7 +106,7 @@ static void hpfs_pos_del(loff_t *p, loff_t d, loff_t c) if ((*p & ~0x3f) == (d & ~0x3f) && (*p & 0x3f) >= (d & 0x3f)) { int n = (*p & 0x3f) - c; if (n < 1) - pr_warn("%s(): %08x - %d\n", + pr_err("%s(): %08x - %d\n", __func__, (int)*p, (int)c >> 8); else *p = (*p & ~0x3f) | n; @@ -246,7 +246,7 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno, struct fnode *fnode; int c1, c2 = 0; if (!(nname = kmalloc(256, GFP_NOFS))) { - pr_warn("out of memory, can't add to dnode\n"); + pr_err("out of memory, can't add to dnode\n"); return 1; } go_up: @@ -288,7 +288,7 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno, not be any error while splitting dnodes, otherwise the whole directory, not only file we're adding, would be lost. */ - pr_warn("out of memory for dnode splitting\n"); + pr_err("out of memory for dnode splitting\n"); hpfs_brelse4(&qbh); kfree(nname); return 1; @@ -604,7 +604,7 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) if (!de_next->down) goto endm; ndown = de_down_pointer(de_next); if (!(de_cp = kmalloc(le16_to_cpu(de->length), GFP_NOFS))) { - pr_warn("out of memory for dtree balancing\n"); + pr_err("out of memory for dtree balancing\n"); goto endm; } memcpy(de_cp, de, le16_to_cpu(de->length)); @@ -645,15 +645,15 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) if (!dlp && down) { if (le32_to_cpu(d1->first_free) > 2044) { if (hpfs_sb(i->i_sb)->sb_chk >= 2) { - pr_warn("unbalanced dnode tree, see hpfs.txt 4 more info\n"); - pr_warn("terminating balancing operation\n"); + pr_err("unbalanced dnode tree, see hpfs.txt 4 more info\n"); + pr_err("terminating balancing operation\n"); } hpfs_brelse4(&qbh1); goto endm; } if (hpfs_sb(i->i_sb)->sb_chk >= 2) { - pr_warn("unbalanced dnode tree, see hpfs.txt 4 more info\n"); - pr_warn("goin'on\n"); + pr_err("unbalanced dnode tree, see hpfs.txt 4 more info\n"); + pr_err("goin'on\n"); } le16_add_cpu(&del->length, 4); del->down = 1; @@ -667,7 +667,7 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) *(__le32 *) ((void *) del + le16_to_cpu(del->length) - 4) = cpu_to_le32(down); } else goto endm; if (!(de_cp = kmalloc(le16_to_cpu(de_prev->length), GFP_NOFS))) { - pr_warn("out of memory for dtree balancing\n"); + pr_err("out of memory for dtree balancing\n"); hpfs_brelse4(&qbh1); goto endm; } @@ -1008,7 +1008,7 @@ struct hpfs_dirent *map_fnode_dirent(struct super_block *s, fnode_secno fno, int d1, d2 = 0; name1 = f->name; if (!(name2 = kmalloc(256, GFP_NOFS))) { - pr_warn("out of memory, can't map dirent\n"); + pr_err("out of memory, can't map dirent\n"); return NULL; } if (f->len <= 15) diff --git a/fs/hpfs/ea.c b/fs/hpfs/ea.c index 817805975457..ce3f98ba993a 100644 --- a/fs/hpfs/ea.c +++ b/fs/hpfs/ea.c @@ -51,7 +51,7 @@ static char *get_indirect_ea(struct super_block *s, int ano, secno a, int size) { char *ret; if (!(ret = kmalloc(size + 1, GFP_NOFS))) { - pr_warn("out of memory for EA\n"); + pr_err("out of memory for EA\n"); return NULL; } if (hpfs_ea_read(s, a, ano, 0, size, ret)) { @@ -139,7 +139,7 @@ char *hpfs_get_ea(struct super_block *s, struct fnode *fnode, char *key, int *si if (ea_indirect(ea)) return get_indirect_ea(s, ea_in_anode(ea), ea_sec(ea), *size = ea_len(ea)); if (!(ret = kmalloc((*size = ea_valuelen(ea)) + 1, GFP_NOFS))) { - pr_warn("out of memory for EA\n"); + pr_err("out of memory for EA\n"); return NULL; } memcpy(ret, ea_data(ea), ea_valuelen(ea)); @@ -165,7 +165,7 @@ char *hpfs_get_ea(struct super_block *s, struct fnode *fnode, char *key, int *si if (ea_indirect(ea)) return get_indirect_ea(s, ea_in_anode(ea), ea_sec(ea), *size = ea_len(ea)); if (!(ret = kmalloc((*size = ea_valuelen(ea)) + 1, GFP_NOFS))) { - pr_warn("out of memory for EA\n"); + pr_err("out of memory for EA\n"); return NULL; } if (hpfs_ea_read(s, a, ano, pos + 4 + ea->namelen + 1, ea_valuelen(ea), ret)) { diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c index 89e5a0b75ea7..7ce4b74234a1 100644 --- a/fs/hpfs/inode.c +++ b/fs/hpfs/inode.c @@ -184,7 +184,7 @@ void hpfs_write_inode(struct inode *i) if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return; if (hpfs_inode->i_rddir_off && !atomic_read(&i->i_count)) { if (*hpfs_inode->i_rddir_off) - pr_warn("write_inode: some position still there\n"); + pr_err("write_inode: some position still there\n"); kfree(hpfs_inode->i_rddir_off); hpfs_inode->i_rddir_off = NULL; } diff --git a/fs/hpfs/map.c b/fs/hpfs/map.c index 6ac8f7a74efc..442770edcdc7 100644 --- a/fs/hpfs/map.c +++ b/fs/hpfs/map.c @@ -65,13 +65,13 @@ unsigned char *hpfs_load_code_page(struct super_block *s, secno cps) struct code_page_directory *cp = hpfs_map_sector(s, cps, &bh, 0); if (!cp) return NULL; if (le32_to_cpu(cp->magic) != CP_DIR_MAGIC) { - pr_warn("Code page directory magic doesn't match (magic = %08x)\n", + pr_err("Code page directory magic doesn't match (magic = %08x)\n", le32_to_cpu(cp->magic)); brelse(bh); return NULL; } if (!le32_to_cpu(cp->n_code_pages)) { - pr_warn("n_code_pages == 0\n"); + pr_err("n_code_pages == 0\n"); brelse(bh); return NULL; } @@ -80,19 +80,19 @@ unsigned char *hpfs_load_code_page(struct super_block *s, secno cps) brelse(bh); if (cpi >= 3) { - pr_warn("Code page index out of array\n"); + pr_err("Code page index out of array\n"); return NULL; } if (!(cpd = hpfs_map_sector(s, cpds, &bh, 0))) return NULL; if (le16_to_cpu(cpd->offs[cpi]) > 0x178) { - pr_warn("Code page index out of sector\n"); + pr_err("Code page index out of sector\n"); brelse(bh); return NULL; } ptr = (unsigned char *)cpd + le16_to_cpu(cpd->offs[cpi]) + 6; if (!(cp_table = kmalloc(256, GFP_KERNEL))) { - pr_warn("out of memory for code page table\n"); + pr_err("out of memory for code page table\n"); brelse(bh); return NULL; } @@ -115,7 +115,7 @@ __le32 *hpfs_load_bitmap_directory(struct super_block *s, secno bmp) int i; __le32 *b; if (!(b = kmalloc(n * 512, GFP_KERNEL))) { - pr_warn("can't allocate memory for bitmap directory\n"); + pr_err("can't allocate memory for bitmap directory\n"); return NULL; } for (i=0;isb_chk >= 2) if (hpfs_is_name_long(from, len) != lng) { - pr_warn("Long name flag mismatch - name "); + pr_err("Long name flag mismatch - name "); for (i = 0; i < len; i++) pr_cont("%c", from[i]); pr_cont(" misidentified as %s.\n", lng ? "short" : "long"); - pr_warn("It's nothing serious. It could happen because of bug in OS/2.\nSet checks=normal to disable this message.\n"); + pr_err("It's nothing serious. It could happen because of bug in OS/2.\nSet checks=normal to disable this message.\n"); } if (!lc) return from; if (!(to = kmalloc(len, GFP_KERNEL))) { - pr_warn("can't allocate memory for name conversion buffer\n"); + pr_err("can't allocate memory for name conversion buffer\n"); return from; } for (i = 0; i < len; i++) to[i] = locase(hpfs_sb(s)->sb_cp_table,from[i]); diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c index 92fd3cebeba4..7cd00d3a7c9b 100644 --- a/fs/hpfs/super.c +++ b/fs/hpfs/super.c @@ -438,7 +438,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data) if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase, &eas, &chk, &errs, &chkdsk, ×hift))) { - pr_warn("bad mount options.\n"); + pr_err("bad mount options.\n"); goto out_err; } if (o == 2) { @@ -446,7 +446,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data) goto out_err; } if (timeshift != sbi->sb_timeshift) { - pr_warn("timeshift can't be changed using remount.\n"); + pr_err("timeshift can't be changed using remount.\n"); goto out_err; } @@ -527,7 +527,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase, &eas, &chk, &errs, &chkdsk, ×hift))) { - pr_warn("bad mount options.\n"); + pr_err("bad mount options.\n"); goto bail0; } if (o==2) { @@ -547,16 +547,16 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) ||*/ le32_to_cpu(superblock->magic) != SB_MAGIC || le32_to_cpu(spareblock->magic) != SP_MAGIC) { if (!silent) - pr_warn("Bad magic ... probably not HPFS\n"); + pr_err("Bad magic ... probably not HPFS\n"); goto bail4; } /* Check version */ if (!(s->s_flags & MS_RDONLY) && superblock->funcversion != 2 && superblock->funcversion != 3) { - pr_warn("Bad version %d,%d. Mount readonly to go around\n", + pr_err("Bad version %d,%d. Mount readonly to go around\n", (int)superblock->version, (int)superblock->funcversion); - pr_warn("please try recent version of HPFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi and if it still can't understand this format, contact author - mikulas@artax.karlin.mff.cuni.cz\n"); + pr_err("please try recent version of HPFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi and if it still can't understand this format, contact author - mikulas@artax.karlin.mff.cuni.cz\n"); goto bail4; } @@ -602,7 +602,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) /* Check for general fs errors*/ if (spareblock->dirty && !spareblock->old_wrote) { if (errs == 2) { - pr_warn("Improperly stopped, not mounted\n"); + pr_err("Improperly stopped, not mounted\n"); goto bail4; } hpfs_error(s, "improperly stopped"); @@ -616,25 +616,25 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) if (spareblock->hotfixes_used || spareblock->n_spares_used) { if (errs >= 2) { - pr_warn("Hotfixes not supported here, try chkdsk\n"); + pr_err("Hotfixes not supported here, try chkdsk\n"); mark_dirty(s, 0); goto bail4; } hpfs_error(s, "hotfixes not supported here, try chkdsk"); if (errs == 0) - pr_warn("Proceeding, but your filesystem will be probably corrupted by this driver...\n"); + pr_err("Proceeding, but your filesystem will be probably corrupted by this driver...\n"); else - pr_warn("This driver may read bad files or crash when operating on disk with hotfixes.\n"); + pr_err("This driver may read bad files or crash when operating on disk with hotfixes.\n"); } if (le32_to_cpu(spareblock->n_dnode_spares) != le32_to_cpu(spareblock->n_dnode_spares_free)) { if (errs >= 2) { - pr_warn("Spare dnodes used, try chkdsk\n"); + pr_err("Spare dnodes used, try chkdsk\n"); mark_dirty(s, 0); goto bail4; } hpfs_error(s, "warning: spare dnodes used, try chkdsk"); if (errs == 0) - pr_warn("Proceeding, but your filesystem could be corrupted if you delete files or directories\n"); + pr_err("Proceeding, but your filesystem could be corrupted if you delete files or directories\n"); } if (chk) { unsigned a; @@ -654,12 +654,12 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) } sbi->sb_dirband_size = a; } else - pr_warn("You really don't want any checks? You are crazy...\n"); + pr_err("You really don't want any checks? You are crazy...\n"); /* Load code page table */ if (le32_to_cpu(spareblock->n_code_pages)) if (!(sbi->sb_cp_table = hpfs_load_code_page(s, le32_to_cpu(spareblock->code_page_dir)))) - pr_warn("code page support is disabled\n"); + pr_err("code page support is disabled\n"); brelse(bh2); brelse(bh1); -- cgit v1.2.3 From 190a8843ded231638d0e7ae7d8ca6a712472d114 Mon Sep 17 00:00:00 2001 From: Conrad Meyer Date: Fri, 6 Jun 2014 14:36:37 -0700 Subject: fs/fat/: add support for DOS 1.x formatted volumes Add structure for parsed BPB information, struct fat_bios_param_block, and move all of the deserialization and validation logic from fat_fill_super() into fat_read_bpb(). Add a 'dos1xfloppy' mount option to infer DOS 2.x BIOS Parameter Block defaults from block device geometry for ancient floppies and floppy images, as a fall-back from the default BPB parsing logic. When fat_read_bpb() finds an invalid FAT filesystem and dos1xfloppy is set, fall back to fat_read_static_bpb(). fat_read_static_bpb() validates that the entire BPB is zero, and that the floppy has a DOS-style 8086 code bootstrapping header. Then it fills in default BPB values from media size and a table.[0] Media size is assumed to be static for archaic FAT volumes. See also: [1]. Fixes kernel.org bug #42617. [0]: https://en.wikipedia.org/wiki/File_Allocation_Table#Exceptions [1]: http://www.win.tue.nl/~aeb/linux/fs/fat/fat-1.html [hirofumi@mail.parknet.co.jp: fix missed error code] Signed-off-by: Conrad Meyer Acked-by: OGAWA Hirofumi Signed-off-by: OGAWA Hirofumi Tested-by: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/filesystems/vfat.txt | 5 + fs/fat/fat.h | 3 +- fs/fat/inode.c | 343 +++++++++++++++++++++++++++++-------- 3 files changed, 274 insertions(+), 77 deletions(-) diff --git a/Documentation/filesystems/vfat.txt b/Documentation/filesystems/vfat.txt index 4a93e98b290a..ce1126aceed8 100644 --- a/Documentation/filesystems/vfat.txt +++ b/Documentation/filesystems/vfat.txt @@ -172,6 +172,11 @@ nfs=stale_rw|nostale_ro To maintain backward compatibility, '-o nfs' is also accepted, defaulting to stale_rw +dos1xfloppy -- If set, use a fallback default BIOS Parameter Block + configuration, determined by backing device size. These static + parameters match defaults assumed by DOS 1.x for 160 kiB, + 180 kiB, 320 kiB, and 360 kiB floppies and floppy images. + : 0,1,yes,no,true,false diff --git a/fs/fat/fat.h b/fs/fat/fat.h index 7c31f4bc74a9..e0c4ba39a377 100644 --- a/fs/fat/fat.h +++ b/fs/fat/fat.h @@ -52,7 +52,8 @@ struct fat_mount_options { usefree:1, /* Use free_clusters for FAT32 */ tz_set:1, /* Filesystem timestamps' offset set */ rodir:1, /* allow ATTR_RO for directory */ - discard:1; /* Issue discard requests on deletions */ + discard:1, /* Issue discard requests on deletions */ + dos1xfloppy:1; /* Assume default BPB for DOS 1.x floppies */ }; #define FAT_HASH_BITS 8 diff --git a/fs/fat/inode.c b/fs/fat/inode.c index b3361fe2bcb5..babff0f40696 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -35,9 +35,71 @@ #define CONFIG_FAT_DEFAULT_IOCHARSET "" #endif +#define KB_IN_SECTORS 2 + +/* + * A deserialized copy of the on-disk structure laid out in struct + * fat_boot_sector. + */ +struct fat_bios_param_block { + u16 fat_sector_size; + u8 fat_sec_per_clus; + u16 fat_reserved; + u8 fat_fats; + u16 fat_dir_entries; + u16 fat_sectors; + u16 fat_fat_length; + u32 fat_total_sect; + + u8 fat16_state; + u32 fat16_vol_id; + + u32 fat32_length; + u32 fat32_root_cluster; + u16 fat32_info_sector; + u8 fat32_state; + u32 fat32_vol_id; +}; + static int fat_default_codepage = CONFIG_FAT_DEFAULT_CODEPAGE; static char fat_default_iocharset[] = CONFIG_FAT_DEFAULT_IOCHARSET; +static struct fat_floppy_defaults { + unsigned nr_sectors; + unsigned sec_per_clus; + unsigned dir_entries; + unsigned media; + unsigned fat_length; +} floppy_defaults[] = { +{ + .nr_sectors = 160 * KB_IN_SECTORS, + .sec_per_clus = 1, + .dir_entries = 64, + .media = 0xFE, + .fat_length = 1, +}, +{ + .nr_sectors = 180 * KB_IN_SECTORS, + .sec_per_clus = 1, + .dir_entries = 64, + .media = 0xFC, + .fat_length = 2, +}, +{ + .nr_sectors = 320 * KB_IN_SECTORS, + .sec_per_clus = 2, + .dir_entries = 112, + .media = 0xFF, + .fat_length = 1, +}, +{ + .nr_sectors = 360 * KB_IN_SECTORS, + .sec_per_clus = 2, + .dir_entries = 112, + .media = 0xFD, + .fat_length = 2, +}, +}; static int fat_add_cluster(struct inode *inode) { @@ -853,6 +915,8 @@ static int fat_show_options(struct seq_file *m, struct dentry *root) seq_puts(m, ",nfs=stale_rw"); if (opts->discard) seq_puts(m, ",discard"); + if (opts->dos1xfloppy) + seq_puts(m, ",dos1xfloppy"); return 0; } @@ -867,7 +931,7 @@ enum { Opt_uni_xl_no, Opt_uni_xl_yes, Opt_nonumtail_no, Opt_nonumtail_yes, Opt_obsolete, Opt_flush, Opt_tz_utc, Opt_rodir, Opt_err_cont, Opt_err_panic, Opt_err_ro, Opt_discard, Opt_nfs, Opt_time_offset, - Opt_nfs_stale_rw, Opt_nfs_nostale_ro, Opt_err, + Opt_nfs_stale_rw, Opt_nfs_nostale_ro, Opt_err, Opt_dos1xfloppy, }; static const match_table_t fat_tokens = { @@ -900,6 +964,7 @@ static const match_table_t fat_tokens = { {Opt_nfs_stale_rw, "nfs"}, {Opt_nfs_stale_rw, "nfs=stale_rw"}, {Opt_nfs_nostale_ro, "nfs=nostale_ro"}, + {Opt_dos1xfloppy, "dos1xfloppy"}, {Opt_obsolete, "conv=binary"}, {Opt_obsolete, "conv=text"}, {Opt_obsolete, "conv=auto"}, @@ -1102,6 +1167,9 @@ static int parse_options(struct super_block *sb, char *options, int is_vfat, case Opt_nfs_nostale_ro: opts->nfs = FAT_NFS_NOSTALE_RO; break; + case Opt_dos1xfloppy: + opts->dos1xfloppy = 1; + break; /* msdos specific */ case Opt_dots: @@ -1247,6 +1315,169 @@ static unsigned long calc_fat_clusters(struct super_block *sb) return sbi->fat_length * sb->s_blocksize * 8 / sbi->fat_bits; } +static bool fat_bpb_is_zero(struct fat_boot_sector *b) +{ + if (get_unaligned_le16(&b->sector_size)) + return false; + if (b->sec_per_clus) + return false; + if (b->reserved) + return false; + if (b->fats) + return false; + if (get_unaligned_le16(&b->dir_entries)) + return false; + if (get_unaligned_le16(&b->sectors)) + return false; + if (b->media) + return false; + if (b->fat_length) + return false; + if (b->secs_track) + return false; + if (b->heads) + return false; + return true; +} + +static int fat_read_bpb(struct super_block *sb, struct fat_boot_sector *b, + int silent, struct fat_bios_param_block *bpb) +{ + int error = -EINVAL; + + /* Read in BPB ... */ + memset(bpb, 0, sizeof(*bpb)); + bpb->fat_sector_size = get_unaligned_le16(&b->sector_size); + bpb->fat_sec_per_clus = b->sec_per_clus; + bpb->fat_reserved = le16_to_cpu(b->reserved); + bpb->fat_fats = b->fats; + bpb->fat_dir_entries = get_unaligned_le16(&b->dir_entries); + bpb->fat_sectors = get_unaligned_le16(&b->sectors); + bpb->fat_fat_length = le16_to_cpu(b->fat_length); + bpb->fat_total_sect = le32_to_cpu(b->total_sect); + + bpb->fat16_state = b->fat16.state; + bpb->fat16_vol_id = get_unaligned_le32(b->fat16.vol_id); + + bpb->fat32_length = le32_to_cpu(b->fat32.length); + bpb->fat32_root_cluster = le32_to_cpu(b->fat32.root_cluster); + bpb->fat32_info_sector = le16_to_cpu(b->fat32.info_sector); + bpb->fat32_state = b->fat32.state; + bpb->fat32_vol_id = get_unaligned_le32(b->fat32.vol_id); + + /* Validate this looks like a FAT filesystem BPB */ + if (!bpb->fat_reserved) { + if (!silent) + fat_msg(sb, KERN_ERR, + "bogus number of reserved sectors"); + goto out; + } + if (!bpb->fat_fats) { + if (!silent) + fat_msg(sb, KERN_ERR, "bogus number of FAT structure"); + goto out; + } + + /* + * Earlier we checked here that b->secs_track and b->head are nonzero, + * but it turns out valid FAT filesystems can have zero there. + */ + + if (!fat_valid_media(b->media)) { + if (!silent) + fat_msg(sb, KERN_ERR, "invalid media value (0x%02x)", + (unsigned)b->media); + goto out; + } + + if (!is_power_of_2(bpb->fat_sector_size) + || (bpb->fat_sector_size < 512) + || (bpb->fat_sector_size > 4096)) { + if (!silent) + fat_msg(sb, KERN_ERR, "bogus logical sector size %u", + (unsigned)bpb->fat_sector_size); + goto out; + } + + if (!is_power_of_2(bpb->fat_sec_per_clus)) { + if (!silent) + fat_msg(sb, KERN_ERR, "bogus sectors per cluster %u", + (unsigned)bpb->fat_sec_per_clus); + goto out; + } + + error = 0; + +out: + return error; +} + +static int fat_read_static_bpb(struct super_block *sb, + struct fat_boot_sector *b, int silent, + struct fat_bios_param_block *bpb) +{ + static const char *notdos1x = "This doesn't look like a DOS 1.x volume"; + + struct fat_floppy_defaults *fdefaults = NULL; + int error = -EINVAL; + sector_t bd_sects; + unsigned i; + + bd_sects = i_size_read(sb->s_bdev->bd_inode) / SECTOR_SIZE; + + /* 16-bit DOS 1.x reliably wrote bootstrap short-jmp code */ + if (b->ignored[0] != 0xeb || b->ignored[2] != 0x90) { + if (!silent) + fat_msg(sb, KERN_ERR, + "%s; no bootstrapping code", notdos1x); + goto out; + } + + /* + * If any value in this region is non-zero, it isn't archaic + * DOS. + */ + if (!fat_bpb_is_zero(b)) { + if (!silent) + fat_msg(sb, KERN_ERR, + "%s; DOS 2.x BPB is non-zero", notdos1x); + goto out; + } + + for (i = 0; i < ARRAY_SIZE(floppy_defaults); i++) { + if (floppy_defaults[i].nr_sectors == bd_sects) { + fdefaults = &floppy_defaults[i]; + break; + } + } + + if (fdefaults == NULL) { + if (!silent) + fat_msg(sb, KERN_WARNING, + "This looks like a DOS 1.x volume, but isn't a recognized floppy size (%llu sectors)", + (u64)bd_sects); + goto out; + } + + if (!silent) + fat_msg(sb, KERN_INFO, + "This looks like a DOS 1.x volume; assuming default BPB values"); + + memset(bpb, 0, sizeof(*bpb)); + bpb->fat_sector_size = SECTOR_SIZE; + bpb->fat_sec_per_clus = fdefaults->sec_per_clus; + bpb->fat_reserved = 1; + bpb->fat_fats = 2; + bpb->fat_dir_entries = fdefaults->dir_entries; + bpb->fat_sectors = fdefaults->nr_sectors; + bpb->fat_fat_length = fdefaults->fat_length; + + error = 0; + +out: + return error; +} + /* * Read the super block of an MS-DOS FS. */ @@ -1256,12 +1487,11 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, struct inode *root_inode = NULL, *fat_inode = NULL; struct inode *fsinfo_inode = NULL; struct buffer_head *bh; - struct fat_boot_sector *b; + struct fat_bios_param_block bpb; struct msdos_sb_info *sbi; u16 logical_sector_size; u32 total_sectors, total_clusters, fat_clusters, rootdir_sectors; int debug; - unsigned int media; long error; char buf[50]; @@ -1298,100 +1528,72 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, goto out_fail; } - b = (struct fat_boot_sector *) bh->b_data; - if (!b->reserved) { - if (!silent) - fat_msg(sb, KERN_ERR, "bogus number of reserved sectors"); - brelse(bh); - goto out_invalid; - } - if (!b->fats) { - if (!silent) - fat_msg(sb, KERN_ERR, "bogus number of FAT structure"); - brelse(bh); - goto out_invalid; - } - - /* - * Earlier we checked here that b->secs_track and b->head are nonzero, - * but it turns out valid FAT filesystems can have zero there. - */ + error = fat_read_bpb(sb, (struct fat_boot_sector *)bh->b_data, silent, + &bpb); + if (error == -EINVAL && sbi->options.dos1xfloppy) + error = fat_read_static_bpb(sb, + (struct fat_boot_sector *)bh->b_data, silent, &bpb); + brelse(bh); - media = b->media; - if (!fat_valid_media(media)) { - if (!silent) - fat_msg(sb, KERN_ERR, "invalid media value (0x%02x)", - media); - brelse(bh); - goto out_invalid; - } - logical_sector_size = get_unaligned_le16(&b->sector_size); - if (!is_power_of_2(logical_sector_size) - || (logical_sector_size < 512) - || (logical_sector_size > 4096)) { - if (!silent) - fat_msg(sb, KERN_ERR, "bogus logical sector size %u", - logical_sector_size); - brelse(bh); - goto out_invalid; - } - sbi->sec_per_clus = b->sec_per_clus; - if (!is_power_of_2(sbi->sec_per_clus)) { - if (!silent) - fat_msg(sb, KERN_ERR, "bogus sectors per cluster %u", - sbi->sec_per_clus); - brelse(bh); + if (error == -EINVAL) goto out_invalid; - } + else if (error) + goto out_fail; + + logical_sector_size = bpb.fat_sector_size; + sbi->sec_per_clus = bpb.fat_sec_per_clus; + error = -EIO; if (logical_sector_size < sb->s_blocksize) { fat_msg(sb, KERN_ERR, "logical sector size too small for device" " (logical sector size = %u)", logical_sector_size); - brelse(bh); goto out_fail; } + if (logical_sector_size > sb->s_blocksize) { - brelse(bh); + struct buffer_head *bh_resize; if (!sb_set_blocksize(sb, logical_sector_size)) { fat_msg(sb, KERN_ERR, "unable to set blocksize %u", logical_sector_size); goto out_fail; } - bh = sb_bread(sb, 0); - if (bh == NULL) { + + /* Verify that the larger boot sector is fully readable */ + bh_resize = sb_bread(sb, 0); + if (bh_resize == NULL) { fat_msg(sb, KERN_ERR, "unable to read boot sector" " (logical sector size = %lu)", sb->s_blocksize); goto out_fail; } - b = (struct fat_boot_sector *) bh->b_data; + brelse(bh_resize); } mutex_init(&sbi->s_lock); sbi->cluster_size = sb->s_blocksize * sbi->sec_per_clus; sbi->cluster_bits = ffs(sbi->cluster_size) - 1; - sbi->fats = b->fats; + sbi->fats = bpb.fat_fats; sbi->fat_bits = 0; /* Don't know yet */ - sbi->fat_start = le16_to_cpu(b->reserved); - sbi->fat_length = le16_to_cpu(b->fat_length); + sbi->fat_start = bpb.fat_reserved; + sbi->fat_length = bpb.fat_fat_length; sbi->root_cluster = 0; sbi->free_clusters = -1; /* Don't know yet */ sbi->free_clus_valid = 0; sbi->prev_free = FAT_START_ENT; sb->s_maxbytes = 0xffffffff; - if (!sbi->fat_length && b->fat32.length) { + if (!sbi->fat_length && bpb.fat32_length) { struct fat_boot_fsinfo *fsinfo; struct buffer_head *fsinfo_bh; /* Must be FAT32 */ sbi->fat_bits = 32; - sbi->fat_length = le32_to_cpu(b->fat32.length); - sbi->root_cluster = le32_to_cpu(b->fat32.root_cluster); + sbi->fat_length = bpb.fat32_length; + sbi->root_cluster = bpb.fat32_root_cluster; /* MC - if info_sector is 0, don't multiply by 0 */ - sbi->fsinfo_sector = le16_to_cpu(b->fat32.info_sector); + sbi->fsinfo_sector = bpb.fat32_info_sector; if (sbi->fsinfo_sector == 0) sbi->fsinfo_sector = 1; @@ -1399,7 +1601,6 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, if (fsinfo_bh == NULL) { fat_msg(sb, KERN_ERR, "bread failed, FSINFO block" " (sector = %lu)", sbi->fsinfo_sector); - brelse(bh); goto out_fail; } @@ -1422,35 +1623,28 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, /* interpret volume ID as a little endian 32 bit integer */ if (sbi->fat_bits == 32) - sbi->vol_id = (((u32)b->fat32.vol_id[0]) | - ((u32)b->fat32.vol_id[1] << 8) | - ((u32)b->fat32.vol_id[2] << 16) | - ((u32)b->fat32.vol_id[3] << 24)); + sbi->vol_id = bpb.fat32_vol_id; else /* fat 16 or 12 */ - sbi->vol_id = (((u32)b->fat16.vol_id[0]) | - ((u32)b->fat16.vol_id[1] << 8) | - ((u32)b->fat16.vol_id[2] << 16) | - ((u32)b->fat16.vol_id[3] << 24)); + sbi->vol_id = bpb.fat16_vol_id; sbi->dir_per_block = sb->s_blocksize / sizeof(struct msdos_dir_entry); sbi->dir_per_block_bits = ffs(sbi->dir_per_block) - 1; sbi->dir_start = sbi->fat_start + sbi->fats * sbi->fat_length; - sbi->dir_entries = get_unaligned_le16(&b->dir_entries); + sbi->dir_entries = bpb.fat_dir_entries; if (sbi->dir_entries & (sbi->dir_per_block - 1)) { if (!silent) fat_msg(sb, KERN_ERR, "bogus directory-entries per block" " (%u)", sbi->dir_entries); - brelse(bh); goto out_invalid; } rootdir_sectors = sbi->dir_entries * sizeof(struct msdos_dir_entry) / sb->s_blocksize; sbi->data_start = sbi->dir_start + rootdir_sectors; - total_sectors = get_unaligned_le16(&b->sectors); + total_sectors = bpb.fat_sectors; if (total_sectors == 0) - total_sectors = le32_to_cpu(b->total_sect); + total_sectors = bpb.fat_total_sect; total_clusters = (total_sectors - sbi->data_start) / sbi->sec_per_clus; @@ -1459,9 +1653,9 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, /* some OSes set FAT_STATE_DIRTY and clean it on unmount. */ if (sbi->fat_bits == 32) - sbi->dirty = b->fat32.state & FAT_STATE_DIRTY; + sbi->dirty = bpb.fat32_state & FAT_STATE_DIRTY; else /* fat 16 or 12 */ - sbi->dirty = b->fat16.state & FAT_STATE_DIRTY; + sbi->dirty = bpb.fat16_state & FAT_STATE_DIRTY; /* check that FAT table does not overflow */ fat_clusters = calc_fat_clusters(sb); @@ -1470,7 +1664,6 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, if (!silent) fat_msg(sb, KERN_ERR, "count of clusters too big (%u)", total_clusters); - brelse(bh); goto out_invalid; } @@ -1483,8 +1676,6 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, if (sbi->prev_free < FAT_START_ENT) sbi->prev_free = FAT_START_ENT; - brelse(bh); - /* set up enough so that it can read an inode */ fat_hash_init(sb); dir_hash_init(sb); -- cgit v1.2.3 From ef19470ef87d06ed906e2fbb6c9aeb7aaa9acc56 Mon Sep 17 00:00:00 2001 From: Manuel Schölling Date: Fri, 6 Jun 2014 14:36:38 -0700 Subject: fs/fat/inode.c: clean up string initializations (char[] instead of char *) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Initializations like 'char *foo = "bar"' will create two variables: a static string and a pointer (foo) to that static string. Instead 'char foo[] = "bar"' will declare a single variable and will end up in shorter assembly (according to Jeff Garzik on the KernelJanitor's TODO list). Signed-off-by: Manuel Schölling Acked-by: OGAWA Hirofumi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/fat/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/fat/inode.c b/fs/fat/inode.c index babff0f40696..9c83594d7fb5 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -421,7 +421,7 @@ struct inode *fat_iget(struct super_block *sb, loff_t i_pos) static int is_exec(unsigned char *extension) { - unsigned char *exe_extensions = "EXECOMBAT", *walk; + unsigned char exe_extensions[] = "EXECOMBAT", *walk; for (walk = exe_extensions; *walk; walk += 3) if (!strncmp(extension, walk, 3)) -- cgit v1.2.3 From 8401aa1f59975c03eeebd3ac6d264cbdfe9af5de Mon Sep 17 00:00:00 2001 From: Jacob Keller Date: Fri, 6 Jun 2014 14:36:39 -0700 Subject: Documentation/SubmittingPatches: describe the Fixes: tag Update the SubmittingPatches process to include howto about the new 'Fixes:' tag to be used when a patch fixes an issue in a previous commit (found by git-bisect for example). Signed-off-by: Jacob Keller Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/SubmittingPatches | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/Documentation/SubmittingPatches b/Documentation/SubmittingPatches index 2a8e89e13e45..7e9abb8a276b 100644 --- a/Documentation/SubmittingPatches +++ b/Documentation/SubmittingPatches @@ -132,6 +132,20 @@ Example: platform_set_drvdata(), but left the variable "dev" unused, delete it. +If your patch fixes a bug in a specific commit, e.g. you found an issue using +git-bisect, please use the 'Fixes:' tag with the first 12 characters of the +SHA-1 ID, and the one line summary. +Example: + + Fixes: e21d2170f366 ("video: remove unnecessary platform_set_drvdata()") + +The following git-config settings can be used to add a pretty format for +outputting the above style in the git log or git show commands + + [core] + abbrev = 12 + [pretty] + fixes = Fixes: %h (\"%s\") 3) Separate your changes. @@ -443,7 +457,7 @@ person it names. This tag documents that potentially interested parties have been included in the discussion -14) Using Reported-by:, Tested-by:, Reviewed-by: and Suggested-by: +14) Using Reported-by:, Tested-by:, Reviewed-by:, Suggested-by: and Fixes: If this patch fixes a problem reported by somebody else, consider adding a Reported-by: tag to credit the reporter for their contribution. Please @@ -498,6 +512,12 @@ idea was not posted in a public forum. That said, if we diligently credit our idea reporters, they will, hopefully, be inspired to help us again in the future. +A Fixes: tag indicates that the patch fixes an issue in a previous commit. It +is used to make it easy to determine where a bug originated, which can help +review a bug fix. This tag also assists the stable kernel team in determining +which stable kernel versions should receive your fix. This is the preferred +method for indicating a bug fixed by the patch. See #2 above for more details. + 15) The canonical patch format -- cgit v1.2.3 From 0b07cb8271507ca99cca79222a1dc92ba415f06b Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:36:40 -0700 Subject: Documentation/filesystems/seq_file.txt: create_proc_entry deprecated Linked article in seq_file.txt still uses create_proc_entry which was removed in commit 80e928f7ebb9 ("proc: Kill create_proc_entry()"). This patch adds information for kernel 3.10 and above Signed-off-by: Fabian Frederick Cc: Jonathan Corbet Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/filesystems/seq_file.txt | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Documentation/filesystems/seq_file.txt b/Documentation/filesystems/seq_file.txt index a1e2e0dda907..1fe0ccb1af55 100644 --- a/Documentation/filesystems/seq_file.txt +++ b/Documentation/filesystems/seq_file.txt @@ -54,6 +54,15 @@ how the mechanism works without getting lost in other details. (Those wanting to see the full source for this module can find it at http://lwn.net/Articles/22359/). +Deprecated create_proc_entry + +Note that the above article uses create_proc_entry which was removed in +kernel 3.10. Current versions require the following update + +- entry = create_proc_entry("sequence", 0, NULL); +- if (entry) +- entry->proc_fops = &ct_file_ops; ++ entry = proc_create("sequence", 0, NULL, &ct_file_ops); The iterator interface -- cgit v1.2.3 From 615cc2c9cf9529846fbc342560d6787c2ccaaeea Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Fri, 6 Jun 2014 14:36:41 -0700 Subject: Documentation/memory-barriers.txt: fix important typo re memory barriers Examples introducing neccesity of RMB+WMP pair reads as A=3 READ B www rrrrrr B=4 READ A Note the opposite order of reads vs writes. But the first example without barriers reads as A=3 READ A B=4 READ B There are 4 outcomes in the first example. But if someone new to the concept tries to insert barriers like this: A=3 READ A www rrrrrr B=4 READ B he will still get all 4 possible outcomes, because "READ A" is first. All this can be utterly confusing because barrier pair seems to be superfluous. In short, fixup first example to match latter examples with barriers. Signed-off-by: Alexey Dobriyan Cc: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/memory-barriers.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt index 46412bded104..f1dc4a215593 100644 --- a/Documentation/memory-barriers.txt +++ b/Documentation/memory-barriers.txt @@ -115,8 +115,8 @@ For example, consider the following sequence of events: CPU 1 CPU 2 =============== =============== { A == 1; B == 2 } - A = 3; x = A; - B = 4; y = B; + A = 3; x = B; + B = 4; y = A; The set of accesses as seen by the memory system in the middle can be arranged in 24 different combinations: -- cgit v1.2.3 From 4e52365f279564cef0ddd41db5237f0471381093 Mon Sep 17 00:00:00 2001 From: Matthew Dempsky Date: Fri, 6 Jun 2014 14:36:42 -0700 Subject: ptrace: fix fork event messages across pid namespaces When tracing a process in another pid namespace, it's important for fork event messages to contain the child's pid as seen from the tracer's pid namespace, not the parent's. Otherwise, the tracer won't be able to correlate the fork event with later SIGTRAP signals it receives from the child. We still risk a race condition if a ptracer from a different pid namespace attaches after we compute the pid_t value. However, sending a bogus fork event message in this unlikely scenario is still a vast improvement over the status quo where we always send bogus fork event messages to debuggers in a different pid namespace than the forking process. Signed-off-by: Matthew Dempsky Acked-by: Oleg Nesterov Cc: Kees Cook Cc: Julien Tinnes Cc: Roland McGrath Cc: Jan Kratochvil Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/ptrace.h | 32 ++++++++++++++++++++++++++++++++ kernel/fork.c | 10 +++++++--- 2 files changed, 39 insertions(+), 3 deletions(-) diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index 07d0df6bf768..077904c8b70d 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -5,6 +5,7 @@ #include /* For struct task_struct. */ #include /* for IS_ERR_VALUE */ #include /* For BUG_ON. */ +#include /* For task_active_pid_ns. */ #include /* @@ -128,6 +129,37 @@ static inline void ptrace_event(int event, unsigned long message) } } +/** + * ptrace_event_pid - possibly stop for a ptrace event notification + * @event: %PTRACE_EVENT_* value to report + * @pid: process identifier for %PTRACE_GETEVENTMSG to return + * + * Check whether @event is enabled and, if so, report @event and @pid + * to the ptrace parent. @pid is reported as the pid_t seen from the + * the ptrace parent's pid namespace. + * + * Called without locks. + */ +static inline void ptrace_event_pid(int event, struct pid *pid) +{ + /* + * FIXME: There's a potential race if a ptracer in a different pid + * namespace than parent attaches between computing message below and + * when we acquire tasklist_lock in ptrace_stop(). If this happens, + * the ptracer will get a bogus pid from PTRACE_GETEVENTMSG. + */ + unsigned long message = 0; + struct pid_namespace *ns; + + rcu_read_lock(); + ns = task_active_pid_ns(rcu_dereference(current->parent)); + if (ns) + message = pid_nr_ns(pid, ns); + rcu_read_unlock(); + + ptrace_event(event, message); +} + /** * ptrace_init_task - initialize ptrace state for a new child * @child: new child task diff --git a/kernel/fork.c b/kernel/fork.c index 0d53eb0dfb6f..d2799d1fc952 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1606,10 +1606,12 @@ long do_fork(unsigned long clone_flags, */ if (!IS_ERR(p)) { struct completion vfork; + struct pid *pid; trace_sched_process_fork(current, p); - nr = task_pid_vnr(p); + pid = get_task_pid(p, PIDTYPE_PID); + nr = pid_vnr(pid); if (clone_flags & CLONE_PARENT_SETTID) put_user(nr, parent_tidptr); @@ -1624,12 +1626,14 @@ long do_fork(unsigned long clone_flags, /* forking complete and child started to run, tell ptracer */ if (unlikely(trace)) - ptrace_event(trace, nr); + ptrace_event_pid(trace, pid); if (clone_flags & CLONE_VFORK) { if (!wait_for_vfork_done(p, &vfork)) - ptrace_event(PTRACE_EVENT_VFORK_DONE, nr); + ptrace_event_pid(PTRACE_EVENT_VFORK_DONE, pid); } + + put_pid(pid); } else { nr = PTR_ERR(p); } -- cgit v1.2.3 From 650226bd95817d727c9a388752d72ef292c4a668 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 6 Jun 2014 14:36:44 -0700 Subject: ptrace: task_clear_jobctl_trapping()->wake_up_bit() needs mb() __wake_up_bit() checks waitqueue_active() and thus the caller needs mb() as wake_up_bit() documents, fix task_clear_jobctl_trapping(). Signed-off-by: Oleg Nesterov Cc: Peter Zijlstra Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/signal.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/signal.c b/kernel/signal.c index 6e600aaa2af4..9b5453ee5f5e 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -277,6 +277,7 @@ void task_clear_jobctl_trapping(struct task_struct *task) { if (unlikely(task->jobctl & JOBCTL_TRAPPING)) { task->jobctl &= ~JOBCTL_TRAPPING; + smp_mb(); /* advised by wake_up_bit() */ wake_up_bit(&task->jobctl, JOBCTL_TRAPPING_BIT); } } -- cgit v1.2.3 From 36fac0a214805bd7c8307cad1cde60a7b833266d Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 6 Jun 2014 14:36:45 -0700 Subject: signals: kill sigfindinword() It has no users and it doesn't look useful. I do not know why/when it was introduced, I can't even find any user in the git history. Signed-off-by: Oleg Nesterov Acked-by: Geert Uytterhoeven Cc: Peter Zijlstra Cc: Al Viro Cc: David Woodhouse Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Mathieu Desnoyers Cc: Richard Weinberger Cc: Steven Rostedt Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/m68k/include/asm/signal.h | 9 --------- arch/x86/include/asm/signal.h | 6 ------ include/linux/signal.h | 5 ----- 3 files changed, 20 deletions(-) diff --git a/arch/m68k/include/asm/signal.h b/arch/m68k/include/asm/signal.h index 214320b50384..8c8ce5e1ee0e 100644 --- a/arch/m68k/include/asm/signal.h +++ b/arch/m68k/include/asm/signal.h @@ -60,15 +60,6 @@ static inline int __gen_sigismember(sigset_t *set, int _sig) __const_sigismember(set,sig) : \ __gen_sigismember(set,sig)) -static inline int sigfindinword(unsigned long word) -{ - asm ("bfffo %1{#0,#0},%0" - : "=d" (word) - : "d" (word & -word) - : "cc"); - return word ^ 31; -} - #endif /* !CONFIG_CPU_HAS_NO_BITFIELDS */ #ifndef __uClinux__ diff --git a/arch/x86/include/asm/signal.h b/arch/x86/include/asm/signal.h index 35e67a457182..31eab867e6d3 100644 --- a/arch/x86/include/asm/signal.h +++ b/arch/x86/include/asm/signal.h @@ -92,12 +92,6 @@ static inline int __gen_sigismember(sigset_t *set, int _sig) ? __const_sigismember((set), (sig)) \ : __gen_sigismember((set), (sig))) -static inline int sigfindinword(unsigned long word) -{ - asm("bsfl %1,%0" : "=r"(word) : "rm"(word) : "cc"); - return word; -} - struct pt_regs; #else /* __i386__ */ diff --git a/include/linux/signal.h b/include/linux/signal.h index 2ac423bdb676..ae744c314630 100644 --- a/include/linux/signal.h +++ b/include/linux/signal.h @@ -63,11 +63,6 @@ static inline int sigismember(sigset_t *set, int _sig) return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW)); } -static inline int sigfindinword(unsigned long word) -{ - return ffz(~word); -} - #endif /* __HAVE_ARCH_SIG_BITOPS */ static inline int sigisemptyset(sigset_t *set) -- cgit v1.2.3 From 6114041aa7e79a28cee554450fc4a67442327c7f Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 6 Jun 2014 14:36:46 -0700 Subject: signals: s/siginitset/sigemptyset/ in do_sigtimedwait() Cosmetic, but siginitset(0) looks a bit strange, sigemptyset() is what do_sigtimedwait() needs. Signed-off-by: Oleg Nesterov Cc: Peter Zijlstra Cc: Al Viro Cc: David Woodhouse Cc: Frederic Weisbecker Cc: Geert Uytterhoeven Cc: Ingo Molnar Cc: Mathieu Desnoyers Cc: Richard Weinberger Cc: Steven Rostedt Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/signal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/signal.c b/kernel/signal.c index 9b5453ee5f5e..251ca9c9d666 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2855,7 +2855,7 @@ int do_sigtimedwait(const sigset_t *which, siginfo_t *info, spin_lock_irq(&tsk->sighand->siglock); __set_task_blocked(tsk, &tsk->real_blocked); - siginitset(&tsk->real_blocked, 0); + sigemptyset(&tsk->real_blocked); sig = dequeue_signal(tsk, &mask, info); } spin_unlock_irq(&tsk->sighand->siglock); -- cgit v1.2.3 From 9490592f2762320ac220f50d4459d9ea7bb797c8 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 6 Jun 2014 14:36:48 -0700 Subject: signals: kill rm_from_queue(), change prepare_signal() to use for_each_thread() rm_from_queue() doesn't make sense. The only caller, prepare_signal(), can use rm_from_queue_full() with the same effect. While at it, change prepare_signal() to use for_each_thread() instead of do/while_each_thread. Signed-off-by: Oleg Nesterov Cc: Peter Zijlstra Cc: Al Viro Cc: David Woodhouse Cc: Frederic Weisbecker Cc: Geert Uytterhoeven Cc: Ingo Molnar Cc: Mathieu Desnoyers Cc: Richard Weinberger Cc: Steven Rostedt Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/signal.c | 43 ++++++++++--------------------------------- 1 file changed, 10 insertions(+), 33 deletions(-) diff --git a/kernel/signal.c b/kernel/signal.c index 251ca9c9d666..19316dc3eb0b 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -728,29 +728,6 @@ static int rm_from_queue_full(sigset_t *mask, struct sigpending *s) } return 1; } -/* - * Remove signals in mask from the pending set and queue. - * Returns 1 if any signals were found. - * - * All callers must be holding the siglock. - */ -static int rm_from_queue(unsigned long mask, struct sigpending *s) -{ - struct sigqueue *q, *n; - - if (!sigtestsetmask(&s->signal, mask)) - return 0; - - sigdelsetmask(&s->signal, mask); - list_for_each_entry_safe(q, n, &s->list, list) { - if (q->info.si_signo < SIGRTMIN && - (mask & sigmask(q->info.si_signo))) { - list_del_init(&q->list); - __sigqueue_free(q); - } - } - return 1; -} static inline int is_si_special(const struct siginfo *info) { @@ -862,6 +839,7 @@ static bool prepare_signal(int sig, struct task_struct *p, bool force) { struct signal_struct *signal = p->signal; struct task_struct *t; + sigset_t flush; if (signal->flags & (SIGNAL_GROUP_EXIT | SIGNAL_GROUP_COREDUMP)) { if (signal->flags & SIGNAL_GROUP_COREDUMP) @@ -873,26 +851,25 @@ static bool prepare_signal(int sig, struct task_struct *p, bool force) /* * This is a stop signal. Remove SIGCONT from all queues. */ - rm_from_queue(sigmask(SIGCONT), &signal->shared_pending); - t = p; - do { - rm_from_queue(sigmask(SIGCONT), &t->pending); - } while_each_thread(p, t); + siginitset(&flush, sigmask(SIGCONT)); + rm_from_queue_full(&flush, &signal->shared_pending); + for_each_thread(p, t) + rm_from_queue_full(&flush, &t->pending); } else if (sig == SIGCONT) { unsigned int why; /* * Remove all stop signals from all queues, wake all threads. */ - rm_from_queue(SIG_KERNEL_STOP_MASK, &signal->shared_pending); - t = p; - do { + siginitset(&flush, SIG_KERNEL_STOP_MASK); + rm_from_queue_full(&flush, &signal->shared_pending); + for_each_thread(p, t) { + rm_from_queue_full(&flush, &t->pending); task_clear_jobctl_pending(t, JOBCTL_STOP_PENDING); - rm_from_queue(SIG_KERNEL_STOP_MASK, &t->pending); if (likely(!(t->ptrace & PT_SEIZED))) wake_up_state(t, __TASK_STOPPED); else ptrace_trap_notify(t); - } while_each_thread(p, t); + } /* * Notify the parent with CLD_CONTINUED if we were stopped. -- cgit v1.2.3 From c09c144139f227de13330111adcafa1659ebd008 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 6 Jun 2014 14:36:50 -0700 Subject: signals: rename rm_from_queue_full() to flush_sigqueue_mask() "rm_from_queue_full" looks ugly and misleading, especially now that rm_from_queue() has gone away. Rename it to flush_sigqueue_mask(), this matches flush_sigqueue() we already have. Also remove the obsolete comment which explains the difference with rm_from_queue() we already killed. Signed-off-by: Oleg Nesterov Cc: Peter Zijlstra Cc: Al Viro Cc: David Woodhouse Cc: Frederic Weisbecker Cc: Geert Uytterhoeven Cc: Ingo Molnar Cc: Mathieu Desnoyers Cc: Richard Weinberger Cc: Steven Rostedt Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/signal.c | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/kernel/signal.c b/kernel/signal.c index 19316dc3eb0b..c088011f873c 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -706,11 +706,8 @@ void signal_wake_up_state(struct task_struct *t, unsigned int state) * Returns 1 if any signals were found. * * All callers must be holding the siglock. - * - * This version takes a sigset mask and looks at all signals, - * not just those in the first mask word. */ -static int rm_from_queue_full(sigset_t *mask, struct sigpending *s) +static int flush_sigqueue_mask(sigset_t *mask, struct sigpending *s) { struct sigqueue *q, *n; sigset_t m; @@ -852,18 +849,18 @@ static bool prepare_signal(int sig, struct task_struct *p, bool force) * This is a stop signal. Remove SIGCONT from all queues. */ siginitset(&flush, sigmask(SIGCONT)); - rm_from_queue_full(&flush, &signal->shared_pending); + flush_sigqueue_mask(&flush, &signal->shared_pending); for_each_thread(p, t) - rm_from_queue_full(&flush, &t->pending); + flush_sigqueue_mask(&flush, &t->pending); } else if (sig == SIGCONT) { unsigned int why; /* * Remove all stop signals from all queues, wake all threads. */ siginitset(&flush, SIG_KERNEL_STOP_MASK); - rm_from_queue_full(&flush, &signal->shared_pending); + flush_sigqueue_mask(&flush, &signal->shared_pending); for_each_thread(p, t) { - rm_from_queue_full(&flush, &t->pending); + flush_sigqueue_mask(&flush, &t->pending); task_clear_jobctl_pending(t, JOBCTL_STOP_PENDING); if (likely(!(t->ptrace & PT_SEIZED))) wake_up_state(t, __TASK_STOPPED); @@ -3102,9 +3099,9 @@ int do_sigaction(int sig, struct k_sigaction *act, struct k_sigaction *oact) if (sig_handler_ignored(sig_handler(t, sig), sig)) { sigemptyset(&mask); sigaddset(&mask, sig); - rm_from_queue_full(&mask, &t->signal->shared_pending); + flush_sigqueue_mask(&mask, &t->signal->shared_pending); do { - rm_from_queue_full(&mask, &t->pending); + flush_sigqueue_mask(&mask, &t->pending); } while_each_thread(current, t); } } @@ -3113,7 +3110,7 @@ int do_sigaction(int sig, struct k_sigaction *act, struct k_sigaction *oact) return 0; } -static int +static int do_sigaltstack (const stack_t __user *uss, stack_t __user *uoss, unsigned long sp) { stack_t oss; -- cgit v1.2.3 From afe2b0386ac22b6a189a2067b25282cade3fbb4d Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 6 Jun 2014 14:36:51 -0700 Subject: signals: cleanup the usage of t/current in do_sigaction() The usage of "task_struct *t" and "current" in do_sigaction() looks really annoying and chaotic. Initially "t" is used as a cached value of current but not consistently, then it is reused as a loop variable and we have to use "current" again. Clean up this mess and also convert the code to use for_each_thread(). Signed-off-by: Oleg Nesterov Cc: Peter Zijlstra Cc: Al Viro Cc: David Woodhouse Cc: Frederic Weisbecker Cc: Geert Uytterhoeven Cc: Ingo Molnar Cc: Mathieu Desnoyers Cc: Richard Weinberger Cc: Steven Rostedt Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/signal.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/kernel/signal.c b/kernel/signal.c index c088011f873c..a6d8c3af0ad6 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3068,16 +3068,16 @@ COMPAT_SYSCALL_DEFINE4(rt_tgsigqueueinfo, int do_sigaction(int sig, struct k_sigaction *act, struct k_sigaction *oact) { - struct task_struct *t = current; + struct task_struct *p = current, *t; struct k_sigaction *k; sigset_t mask; if (!valid_signal(sig) || sig < 1 || (act && sig_kernel_only(sig))) return -EINVAL; - k = &t->sighand->action[sig-1]; + k = &p->sighand->action[sig-1]; - spin_lock_irq(¤t->sighand->siglock); + spin_lock_irq(&p->sighand->siglock); if (oact) *oact = *k; @@ -3096,17 +3096,16 @@ int do_sigaction(int sig, struct k_sigaction *act, struct k_sigaction *oact) * (for example, SIGCHLD), shall cause the pending signal to * be discarded, whether or not it is blocked" */ - if (sig_handler_ignored(sig_handler(t, sig), sig)) { + if (sig_handler_ignored(sig_handler(p, sig), sig)) { sigemptyset(&mask); sigaddset(&mask, sig); - flush_sigqueue_mask(&mask, &t->signal->shared_pending); - do { + flush_sigqueue_mask(&mask, &p->signal->shared_pending); + for_each_thread(p, t) flush_sigqueue_mask(&mask, &t->pending); - } while_each_thread(current, t); } } - spin_unlock_irq(¤t->sighand->siglock); + spin_unlock_irq(&p->sighand->siglock); return 0; } -- cgit v1.2.3 From 0341729b4b832e753c5e745c6ba0e797f6198be0 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 6 Jun 2014 14:36:53 -0700 Subject: signals: mv {dis,}allow_signal() from sched.h/exit.c to signal.[ch] Move the declaration/definition of allow_signal/disallow_signal to signal.h/signal.c. The new place is more logical and allows to use the static helpers in signal.c (see the next changes). While at it, make them return void and remove the valid_signal() check. Nobody checks the returned value, and in-kernel users must not pass the wrong signal number. Signed-off-by: Oleg Nesterov Cc: Peter Zijlstra Cc: Al Viro Cc: David Woodhouse Cc: Frederic Weisbecker Cc: Geert Uytterhoeven Cc: Ingo Molnar Cc: Mathieu Desnoyers Cc: Richard Weinberger Cc: Steven Rostedt Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 3 --- include/linux/signal.h | 2 ++ kernel/exit.c | 39 --------------------------------------- kernel/signal.c | 29 +++++++++++++++++++++++++++++ 4 files changed, 31 insertions(+), 42 deletions(-) diff --git a/include/linux/sched.h b/include/linux/sched.h index 8fcd0e6098d9..ea74596014a2 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2414,9 +2414,6 @@ extern void flush_itimer_signals(void); extern void do_group_exit(int); -extern int allow_signal(int); -extern int disallow_signal(int); - extern int do_execve(struct filename *, const char __user * const __user *, const char __user * const __user *); diff --git a/include/linux/signal.h b/include/linux/signal.h index ae744c314630..ac83c593f4b9 100644 --- a/include/linux/signal.h +++ b/include/linux/signal.h @@ -284,6 +284,8 @@ extern int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka, extern void signal_setup_done(int failed, struct ksignal *ksig, int stepping); extern void signal_delivered(int sig, siginfo_t *info, struct k_sigaction *ka, struct pt_regs *regs, int stepping); extern void exit_signals(struct task_struct *tsk); +extern void allow_signal(int); +extern void disallow_signal(int); /* * Eventually that'll replace get_signal_to_deliver(); macro for now, diff --git a/kernel/exit.c b/kernel/exit.c index 750c2e594617..e5c4668f1799 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -313,45 +313,6 @@ kill_orphaned_pgrp(struct task_struct *tsk, struct task_struct *parent) } } -/* - * Let kernel threads use this to say that they allow a certain signal. - * Must not be used if kthread was cloned with CLONE_SIGHAND. - */ -int allow_signal(int sig) -{ - if (!valid_signal(sig) || sig < 1) - return -EINVAL; - - spin_lock_irq(¤t->sighand->siglock); - /* This is only needed for daemonize()'ed kthreads */ - sigdelset(¤t->blocked, sig); - /* - * Kernel threads handle their own signals. Let the signal code - * know it'll be handled, so that they don't get converted to - * SIGKILL or just silently dropped. - */ - current->sighand->action[(sig)-1].sa.sa_handler = (void __user *)2; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - return 0; -} - -EXPORT_SYMBOL(allow_signal); - -int disallow_signal(int sig) -{ - if (!valid_signal(sig) || sig < 1) - return -EINVAL; - - spin_lock_irq(¤t->sighand->siglock); - current->sighand->action[(sig)-1].sa.sa_handler = SIG_IGN; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - return 0; -} - -EXPORT_SYMBOL(disallow_signal); - #ifdef CONFIG_MEMCG /* * A task is exiting. If it owned this mm, find a new owner for the mm. diff --git a/kernel/signal.c b/kernel/signal.c index a6d8c3af0ad6..7d6ff8b18509 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3066,6 +3066,35 @@ COMPAT_SYSCALL_DEFINE4(rt_tgsigqueueinfo, } #endif +/* + * Let kernel threads use this to say that they allow a certain signal. + * Must not be used if kthread was cloned with CLONE_SIGHAND. + */ +void allow_signal(int sig) +{ + spin_lock_irq(¤t->sighand->siglock); + /* This is only needed for daemonize()'ed kthreads */ + sigdelset(¤t->blocked, sig); + /* + * Kernel threads handle their own signals. Let the signal code + * know it'll be handled, so that they don't get converted to + * SIGKILL or just silently dropped. + */ + current->sighand->action[(sig)-1].sa.sa_handler = (void __user *)2; + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); +} +EXPORT_SYMBOL(allow_signal); + +void disallow_signal(int sig) +{ + spin_lock_irq(¤t->sighand->siglock); + current->sighand->action[(sig)-1].sa.sa_handler = SIG_IGN; + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); +} +EXPORT_SYMBOL(disallow_signal); + int do_sigaction(int sig, struct k_sigaction *act, struct k_sigaction *oact) { struct task_struct *p = current, *t; -- cgit v1.2.3 From c240837fa7a7dd8cb3bef017ffb8af2c32cb0caf Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 6 Jun 2014 14:36:55 -0700 Subject: signals: jffs2: fix the wrong usage of disallow_signal() jffs2_garbage_collect_thread() does disallow_signal(SIGHUP) around jffs2_garbage_collect_pass() and the comment says "We don't want SIGHUP to interrupt us". But disallow_signal() can't ensure that jffs2_garbage_collect_pass() won't be interrupted by SIGHUP, the problem is that SIGHUP can be already pending when disallow_signal() is called, and in this case any interruptible sleep won't block. Note: this is in fact because disallow_signal() is buggy and should be fixed, see the next changes. But there is another reason why disallow_signal() is wrong: SIG_IGN set by disallow_signal() silently discards any SIGHUP which can be sent before the next allow_signal(SIGHUP). Change this code to use sigprocmask(SIG_UNBLOCK/SIG_BLOCK, SIGHUP). This even matches the old (and wrong) semantics allow/disallow had when this logic was written. Signed-off-by: Oleg Nesterov Cc: Peter Zijlstra Cc: Al Viro Cc: David Woodhouse Cc: Frederic Weisbecker Cc: Geert Uytterhoeven Cc: Ingo Molnar Cc: Mathieu Desnoyers Cc: Richard Weinberger Cc: Steven Rostedt Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/jffs2/background.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c index 2b60ce1996aa..bb9cebc9ca8a 100644 --- a/fs/jffs2/background.c +++ b/fs/jffs2/background.c @@ -75,10 +75,13 @@ void jffs2_stop_garbage_collect_thread(struct jffs2_sb_info *c) static int jffs2_garbage_collect_thread(void *_c) { struct jffs2_sb_info *c = _c; + sigset_t hupmask; + siginitset(&hupmask, sigmask(SIGHUP)); allow_signal(SIGKILL); allow_signal(SIGSTOP); allow_signal(SIGCONT); + allow_signal(SIGHUP); c->gc_task = current; complete(&c->gc_thread_start); @@ -87,7 +90,7 @@ static int jffs2_garbage_collect_thread(void *_c) set_freezable(); for (;;) { - allow_signal(SIGHUP); + sigprocmask(SIG_UNBLOCK, &hupmask, NULL); again: spin_lock(&c->erase_completion_lock); if (!jffs2_thread_should_wake(c)) { @@ -95,10 +98,9 @@ static int jffs2_garbage_collect_thread(void *_c) spin_unlock(&c->erase_completion_lock); jffs2_dbg(1, "%s(): sleeping...\n", __func__); schedule(); - } else + } else { spin_unlock(&c->erase_completion_lock); - - + } /* Problem - immediately after bootup, the GCD spends a lot * of time in places like jffs2_kill_fragtree(); so much so * that userspace processes (like gdm and X) are starved @@ -150,7 +152,7 @@ static int jffs2_garbage_collect_thread(void *_c) } } /* We don't want SIGHUP to interrupt us. STOP and KILL are OK though. */ - disallow_signal(SIGHUP); + sigprocmask(SIG_BLOCK, &hupmask, NULL); jffs2_dbg(1, "%s(): pass\n", __func__); if (jffs2_garbage_collect_pass(c) == -ENOSPC) { -- cgit v1.2.3 From ec5955b8fdc1b0bc62495e13869769be732cc6c3 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 6 Jun 2014 14:36:57 -0700 Subject: signals: kill the obsolete sigdelset() and recalc_sigpending() in allow_signal() allow_signal() does sigdelset(current->blocked) due to historic reason, previously it could be called by a daemonize()'ed kthread, and daemonize() played with current->blocked. Now that daemonize() has gone away we can remove sigdelset() and recalc_sigpending(). If a user really wants to unblock a signal, it must use sigprocmask() or set_current_block() explicitely. Signed-off-by: Oleg Nesterov Cc: Peter Zijlstra Cc: Al Viro Cc: David Woodhouse Cc: Frederic Weisbecker Cc: Geert Uytterhoeven Cc: Ingo Molnar Cc: Mathieu Desnoyers Cc: Richard Weinberger Cc: Steven Rostedt Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/signal.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/kernel/signal.c b/kernel/signal.c index 7d6ff8b18509..c64c891ca0a6 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3072,16 +3072,13 @@ COMPAT_SYSCALL_DEFINE4(rt_tgsigqueueinfo, */ void allow_signal(int sig) { - spin_lock_irq(¤t->sighand->siglock); - /* This is only needed for daemonize()'ed kthreads */ - sigdelset(¤t->blocked, sig); /* * Kernel threads handle their own signals. Let the signal code * know it'll be handled, so that they don't get converted to * SIGKILL or just silently dropped. */ + spin_lock_irq(¤t->sighand->siglock); current->sighand->action[(sig)-1].sa.sa_handler = (void __user *)2; - recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); } EXPORT_SYMBOL(allow_signal); -- cgit v1.2.3 From 580d34e42ad621736a3c53c9c11a2152c18a4068 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 6 Jun 2014 14:36:58 -0700 Subject: signals: disallow_signal() should flush the potentially pending signal disallow_signal() simply sets SIG_IGN, this is not enough and recalc_sigpending() is simply pointless because in can never change the state of TIF_SIGPENDING. If we ignore a signal, we also need to do flush_sigqueue_mask() for the case when this signal is pending, this way recalc_sigpending() can actually clear TIF_SIGPENDING and we do not "leak" the allocated siginfo's. Signed-off-by: Oleg Nesterov Cc: Peter Zijlstra Cc: Al Viro Cc: David Woodhouse Cc: Frederic Weisbecker Cc: Geert Uytterhoeven Cc: Ingo Molnar Cc: Mathieu Desnoyers Cc: Richard Weinberger Cc: Steven Rostedt Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/signal.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/kernel/signal.c b/kernel/signal.c index c64c891ca0a6..3ec405132c79 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3085,8 +3085,15 @@ EXPORT_SYMBOL(allow_signal); void disallow_signal(int sig) { + sigset_t mask; + + sigemptyset(&mask); + sigaddset(&mask, sig); + spin_lock_irq(¤t->sighand->siglock); current->sighand->action[(sig)-1].sa.sa_handler = SIG_IGN; + flush_sigqueue_mask(&mask, ¤t->signal->shared_pending); + flush_sigqueue_mask(&mask, ¤t->pending); recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); } -- cgit v1.2.3 From b4e74264eb0b03f42097fa70a0766312156244a0 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 6 Jun 2014 14:37:00 -0700 Subject: signals: introduce kernel_sigaction() Now that allow_signal() is really trivial we can unify it with disallow_signal(). Add the new helper, kernel_sigaction(), and reimplement allow_signal/disallow_signal as a trivial wrappers. This saves one EXPORT_SYMBOL() and the new helper can have more users. Signed-off-by: Oleg Nesterov Cc: Peter Zijlstra Cc: Al Viro Cc: David Woodhouse Cc: Frederic Weisbecker Cc: Geert Uytterhoeven Cc: Ingo Molnar Cc: Mathieu Desnoyers Cc: Richard Weinberger Cc: Steven Rostedt Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/signal.h | 18 ++++++++++++++++-- kernel/signal.c | 36 ++++++++++++------------------------ 2 files changed, 28 insertions(+), 26 deletions(-) diff --git a/include/linux/signal.h b/include/linux/signal.h index ac83c593f4b9..c9e65360c49a 100644 --- a/include/linux/signal.h +++ b/include/linux/signal.h @@ -284,8 +284,22 @@ extern int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka, extern void signal_setup_done(int failed, struct ksignal *ksig, int stepping); extern void signal_delivered(int sig, siginfo_t *info, struct k_sigaction *ka, struct pt_regs *regs, int stepping); extern void exit_signals(struct task_struct *tsk); -extern void allow_signal(int); -extern void disallow_signal(int); +extern void kernel_sigaction(int, __sighandler_t); + +static inline void allow_signal(int sig) +{ + /* + * Kernel threads handle their own signals. Let the signal code + * know it'll be handled, so that they don't get converted to + * SIGKILL or just silently dropped. + */ + kernel_sigaction(sig, (__force __sighandler_t)2); +} + +static inline void disallow_signal(int sig) +{ + kernel_sigaction(sig, SIG_IGN); +} /* * Eventually that'll replace get_signal_to_deliver(); macro for now, diff --git a/kernel/signal.c b/kernel/signal.c index 3ec405132c79..a4077e90f19f 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3067,37 +3067,25 @@ COMPAT_SYSCALL_DEFINE4(rt_tgsigqueueinfo, #endif /* - * Let kernel threads use this to say that they allow a certain signal. - * Must not be used if kthread was cloned with CLONE_SIGHAND. + * For kthreads only, must not be used if cloned with CLONE_SIGHAND */ -void allow_signal(int sig) +void kernel_sigaction(int sig, __sighandler_t action) { - /* - * Kernel threads handle their own signals. Let the signal code - * know it'll be handled, so that they don't get converted to - * SIGKILL or just silently dropped. - */ spin_lock_irq(¤t->sighand->siglock); - current->sighand->action[(sig)-1].sa.sa_handler = (void __user *)2; - spin_unlock_irq(¤t->sighand->siglock); -} -EXPORT_SYMBOL(allow_signal); + current->sighand->action[sig - 1].sa.sa_handler = action; + if (action == SIG_IGN) { + sigset_t mask; -void disallow_signal(int sig) -{ - sigset_t mask; + sigemptyset(&mask); + sigaddset(&mask, sig); - sigemptyset(&mask); - sigaddset(&mask, sig); - - spin_lock_irq(¤t->sighand->siglock); - current->sighand->action[(sig)-1].sa.sa_handler = SIG_IGN; - flush_sigqueue_mask(&mask, ¤t->signal->shared_pending); - flush_sigqueue_mask(&mask, ¤t->pending); - recalc_sigpending(); + flush_sigqueue_mask(&mask, ¤t->signal->shared_pending); + flush_sigqueue_mask(&mask, ¤t->pending); + recalc_sigpending(); + } spin_unlock_irq(¤t->sighand->siglock); } -EXPORT_SYMBOL(disallow_signal); +EXPORT_SYMBOL(kernel_sigaction); int do_sigaction(int sig, struct k_sigaction *act, struct k_sigaction *oact) { -- cgit v1.2.3 From 76e0a6f40b198f08fca69221c3d0112d1e9713a7 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 6 Jun 2014 14:37:02 -0700 Subject: signals: change wait_for_helper() to use kernel_sigaction() Now that we have kernel_sigaction() we can change wait_for_helper() to use it and cleans up the code a bit. Signed-off-by: Oleg Nesterov Cc: Peter Zijlstra Cc: Al Viro Cc: David Woodhouse Cc: Frederic Weisbecker Cc: Geert Uytterhoeven Cc: Ingo Molnar Cc: Mathieu Desnoyers Cc: Richard Weinberger Cc: Steven Rostedt Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/kmod.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/kernel/kmod.c b/kernel/kmod.c index 0ac67a5861c5..8637e041a247 100644 --- a/kernel/kmod.c +++ b/kernel/kmod.c @@ -285,10 +285,7 @@ static int wait_for_helper(void *data) pid_t pid; /* If SIGCLD is ignored sys_wait4 won't populate the status. */ - spin_lock_irq(¤t->sighand->siglock); - current->sighand->action[SIGCHLD-1].sa.sa_handler = SIG_DFL; - spin_unlock_irq(¤t->sighand->siglock); - + kernel_sigaction(SIGCHLD, SIG_DFL); pid = kernel_thread(____call_usermodehelper, sub_info, SIGCHLD); if (pid < 0) { sub_info->retval = pid; -- cgit v1.2.3 From 17c2b4ee40beae2769dc143f222477ded01800bb Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:37:03 -0700 Subject: fs/proc/task_mmu.c: replace seq_printf by seq_puts Signed-off-by: Fabian Frederick Cc: Pavel Emelyanov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/proc/task_mmu.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 48cbe4c0b2a5..5d9da22e29b0 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -1418,10 +1418,10 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid) seq_printf(m, "%08lx %s", vma->vm_start, buffer); if (file) { - seq_printf(m, " file="); + seq_puts(m, " file="); seq_path(m, &file->f_path, "\n\t= "); } else if (vma->vm_start <= mm->brk && vma->vm_end >= mm->start_brk) { - seq_printf(m, " heap"); + seq_puts(m, " heap"); } else { pid_t tid = vm_is_stack(task, vma, is_pid); if (tid != 0) { @@ -1431,14 +1431,14 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid) */ if (!is_pid || (vma->vm_start <= mm->start_stack && vma->vm_end >= mm->start_stack)) - seq_printf(m, " stack"); + seq_puts(m, " stack"); else seq_printf(m, " stack:%d", tid); } } if (is_vm_hugetlb_page(vma)) - seq_printf(m, " huge"); + seq_puts(m, " huge"); walk_page_range(vma->vm_start, vma->vm_end, &walk); -- cgit v1.2.3 From a05e16ada45e0e36be37e2e56052b3728cc4b36d Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:37:04 -0700 Subject: fs/proc/vmcore.c: remove NULL assignment to static Static values are automatically initialized to NULL. Signed-off-by: Fabian Frederick Cc: Vivek Goyal Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/proc/vmcore.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c index 6a8e785b29da..382aa890e228 100644 --- a/fs/proc/vmcore.c +++ b/fs/proc/vmcore.c @@ -42,7 +42,7 @@ static size_t elfnotes_sz; /* Total size of vmcore file. */ static u64 vmcore_size; -static struct proc_dir_entry *proc_vmcore = NULL; +static struct proc_dir_entry *proc_vmcore; /* * Returns > 0 for RAM pages, 0 for non-RAM pages, < 0 on error -- cgit v1.2.3 From a219ccf4637396a2392bfbec7c12acbfe2b06b46 Mon Sep 17 00:00:00 2001 From: "Srivatsa S. Bhat" Date: Fri, 6 Jun 2014 14:37:05 -0700 Subject: smp: print more useful debug info upon receiving IPI on an offline CPU There is a longstanding problem related to CPU hotplug which causes IPIs to be delivered to offline CPUs, and the smp-call-function IPI handler code prints out a warning whenever this is detected. Every once in a while this (usually harmless) warning gets reported on LKML, but so far it has not been completely fixed. Usually the solution involves finding out the IPI sender and fixing it by adding appropriate synchronization with CPU hotplug. However, while going through one such internal bug reports, I found that there is a significant bug in the receiver side itself (more specifically, in stop-machine) that can lead to this problem even when the sender code is perfectly fine. This patchset fixes that synchronization problem in the CPU hotplug stop-machine code. Patch 1 adds some additional debug code to the smp-call-function framework, to help debug such issues easily. Patch 2 modifies the stop-machine code to ensure that any IPIs that were sent while the target CPU was online, would be noticed and handled by that CPU without fail before it goes offline. Thus, this avoids scenarios where IPIs are received on offline CPUs (as long as the sender uses proper hotplug synchronization). In fact, I debugged the problem by using Patch 1, and found that the payload of the IPI was always the block layer's trigger_softirq() function. But I was not able to find anything wrong with the block layer code. That's when I started looking at the stop-machine code and realized that there is a race-window which makes the IPI _receiver_ the culprit, not the sender. Patch 2 fixes that race and hence this should put an end to most of the hard-to-debug IPI-to-offline-CPU issues. This patch (of 2): Today the smp-call-function code just prints a warning if we get an IPI on an offline CPU. This info is sufficient to let us know that something went wrong, but often it is very hard to debug exactly who sent the IPI and why, from this info alone. In most cases, we get the warning about the IPI to an offline CPU, immediately after the CPU going offline comes out of the stop-machine phase and reenables interrupts. Since all online CPUs participate in stop-machine, the information regarding the sender of the IPI is already lost by the time we exit the stop-machine loop. So even if we dump the stack on each CPU at this point, we won't find anything useful since all of them will show the stack-trace of the stopper thread. So we need a better way to figure out who sent the IPI and why. To achieve this, when we detect an IPI targeted to an offline CPU, loop through the call-single-data linked list and print out the payload (i.e., the name of the function which was supposed to be executed by the target CPU). This would give us an insight as to who might have sent the IPI and help us debug this further. [akpm@linux-foundation.org: correctly suppress warning output on second and later occurrences] Signed-off-by: Srivatsa S. Bhat Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Tejun Heo Cc: Rusty Russell Cc: Frederic Weisbecker Cc: Christoph Hellwig Cc: Mel Gorman Cc: Rik van Riel Cc: Borislav Petkov Cc: Steven Rostedt Cc: Mike Galbraith Cc: Gautham R Shenoy Cc: "Paul E. McKenney" Cc: Oleg Nesterov Cc: Rafael J. Wysocki Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/smp.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/kernel/smp.c b/kernel/smp.c index 06d574e42c72..306f8180b0d5 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -185,14 +185,26 @@ void generic_smp_call_function_single_interrupt(void) { struct llist_node *entry; struct call_single_data *csd, *csd_next; + static bool warned; + + entry = llist_del_all(&__get_cpu_var(call_single_queue)); + entry = llist_reverse_order(entry); /* * Shouldn't receive this interrupt on a cpu that is not yet online. */ - WARN_ON_ONCE(!cpu_online(smp_processor_id())); + if (unlikely(!cpu_online(smp_processor_id()) && !warned)) { + warned = true; + WARN(1, "IPI on offline CPU %d\n", smp_processor_id()); - entry = llist_del_all(&__get_cpu_var(call_single_queue)); - entry = llist_reverse_order(entry); + /* + * We don't have to use the _safe() variant here + * because we are not invoking the IPI handlers yet. + */ + llist_for_each_entry(csd, entry, llist) + pr_warn("IPI callback %pS sent to offline CPU\n", + csd->func); + } llist_for_each_entry_safe(csd, csd_next, entry, llist) { csd->func(csd->info); -- cgit v1.2.3 From f06e5153f4ae2e2f3b0300f0e260e40cb7fefd45 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Fri, 6 Jun 2014 14:37:07 -0700 Subject: kernel/panic.c: add "crash_kexec_post_notifiers" option for kdump after panic_notifers Add a "crash_kexec_post_notifiers" boot option to run kdump after running panic_notifiers and dump kmsg. This can help rare situations where kdump fails because of unstable crashed kernel or hardware failure (memory corruption on critical data/code), or the 2nd kernel is already broken by the 1st kernel (it's a broken behavior, but who can guarantee that the "crashed" kernel works correctly?). Usage: add "crash_kexec_post_notifiers" to kernel boot option. Note that this actually increases risks of the failure of kdump. This option should be set only if you worry about the rare case of kdump failure rather than increasing the chance of success. Signed-off-by: Masami Hiramatsu Acked-by: Motohiro Kosaki Acked-by: Vivek Goyal Cc: Eric Biederman Cc: Yoshihiro YUNOMAE Cc: Satoru MORIYA Cc: Tomoki Sekiyama Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/kernel-parameters.txt | 8 ++++++++ kernel/panic.c | 23 +++++++++++++++++++++-- 2 files changed, 29 insertions(+), 2 deletions(-) diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 9973a7e2e0ac..b9f67781c577 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -2361,6 +2361,14 @@ bytes respectively. Such letter suffixes can also be entirely omitted. timeout < 0: reboot immediately Format: + crash_kexec_post_notifiers + Run kdump after running panic-notifiers and dumping + kmsg. This only for the users who doubt kdump always + succeeds in any situation. + Note that this also increases risks of kdump failure, + because some panic notifiers can make the crashed + kernel more unstable. + parkbd.port= [HW] Parallel port number the keyboard adapter is connected to, default is 0. Format: diff --git a/kernel/panic.c b/kernel/panic.c index d02fa9fef46a..62e16cef9cc2 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -32,6 +32,7 @@ static unsigned long tainted_mask; static int pause_on_oops; static int pause_on_oops_flag; static DEFINE_SPINLOCK(pause_on_oops_lock); +static bool crash_kexec_post_notifiers; int panic_timeout = CONFIG_PANIC_TIMEOUT; EXPORT_SYMBOL_GPL(panic_timeout); @@ -112,9 +113,11 @@ void panic(const char *fmt, ...) /* * If we have crashed and we have a crash kernel loaded let it handle * everything else. - * Do we want to call this before we try to display a message? + * If we want to run this after calling panic_notifiers, pass + * the "crash_kexec_post_notifiers" option to the kernel. */ - crash_kexec(NULL); + if (!crash_kexec_post_notifiers) + crash_kexec(NULL); /* * Note smp_send_stop is the usual smp shutdown function, which @@ -131,6 +134,15 @@ void panic(const char *fmt, ...) kmsg_dump(KMSG_DUMP_PANIC); + /* + * If you doubt kdump always works fine in any situation, + * "crash_kexec_post_notifiers" offers you a chance to run + * panic_notifiers and dumping kmsg before kdump. + * Note: since some panic_notifiers can make crashed kernel + * more unstable, it can increase risks of the kdump failure too. + */ + crash_kexec(NULL); + bust_spinlocks(0); if (!panic_blink) @@ -472,6 +484,13 @@ EXPORT_SYMBOL(__stack_chk_fail); core_param(panic, panic_timeout, int, 0644); core_param(pause_on_oops, pause_on_oops, int, 0644); +static int __init setup_crash_kexec_post_notifiers(char *s) +{ + crash_kexec_post_notifiers = true; + return 0; +} +early_param("crash_kexec_post_notifiers", setup_crash_kexec_post_notifiers); + static int __init oops_setup(char *s) { if (!s) -- cgit v1.2.3 From e1bebcf41ed0aa15f11cec186cbd5141730bcafc Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:37:09 -0700 Subject: kernel/kexec.c: convert printk to pr_foo() + some pr_warning -> pr_warn and checkpatch warning fixes Signed-off-by: Fabian Frederick Cc: Eric Biederman Cc: Vivek Goyal Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/kexec.c | 69 +++++++++++++++++++++++++++------------------------------- 1 file changed, 32 insertions(+), 37 deletions(-) diff --git a/kernel/kexec.c b/kernel/kexec.c index 28c57069ef68..6748688813d0 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -125,8 +125,8 @@ static struct page *kimage_alloc_page(struct kimage *image, unsigned long dest); static int do_kimage_alloc(struct kimage **rimage, unsigned long entry, - unsigned long nr_segments, - struct kexec_segment __user *segments) + unsigned long nr_segments, + struct kexec_segment __user *segments) { size_t segment_bytes; struct kimage *image; @@ -257,13 +257,13 @@ static int kimage_normal_alloc(struct kimage **rimage, unsigned long entry, image->control_code_page = kimage_alloc_control_pages(image, get_order(KEXEC_CONTROL_PAGE_SIZE)); if (!image->control_code_page) { - printk(KERN_ERR "Could not allocate control_code_buffer\n"); + pr_err("Could not allocate control_code_buffer\n"); goto out_free; } image->swap_page = kimage_alloc_control_pages(image, 0); if (!image->swap_page) { - printk(KERN_ERR "Could not allocate swap buffer\n"); + pr_err("Could not allocate swap buffer\n"); goto out_free; } @@ -332,7 +332,7 @@ static int kimage_crash_alloc(struct kimage **rimage, unsigned long entry, image->control_code_page = kimage_alloc_control_pages(image, get_order(KEXEC_CONTROL_PAGE_SIZE)); if (!image->control_code_page) { - printk(KERN_ERR "Could not allocate control_code_buffer\n"); + pr_err("Could not allocate control_code_buffer\n"); goto out_free; } @@ -621,8 +621,8 @@ static void kimage_terminate(struct kimage *image) #define for_each_kimage_entry(image, ptr, entry) \ for (ptr = &image->head; (entry = *ptr) && !(entry & IND_DONE); \ - ptr = (entry & IND_INDIRECTION)? \ - phys_to_virt((entry & PAGE_MASK)): ptr +1) + ptr = (entry & IND_INDIRECTION) ? \ + phys_to_virt((entry & PAGE_MASK)) : ptr + 1) static void kimage_free_entry(kimage_entry_t entry) { @@ -650,8 +650,7 @@ static void kimage_free(struct kimage *image) * done with it. */ ind = entry; - } - else if (entry & IND_SOURCE) + } else if (entry & IND_SOURCE) kimage_free_entry(entry); } /* Free the final indirection page */ @@ -774,8 +773,7 @@ static struct page *kimage_alloc_page(struct kimage *image, addr = old_addr; page = old_page; break; - } - else { + } else { /* Place the page on the destination list I * will use it later. */ @@ -1059,7 +1057,7 @@ COMPAT_SYSCALL_DEFINE4(kexec_load, compat_ulong_t, entry, return -EINVAL; ksegments = compat_alloc_user_space(nr_segments * sizeof(out)); - for (i=0; i < nr_segments; i++) { + for (i = 0; i < nr_segments; i++) { result = copy_from_user(&in, &segments[i], sizeof(in)); if (result) return -EFAULT; @@ -1214,14 +1212,14 @@ void crash_save_cpu(struct pt_regs *regs, int cpu) * squirrelled away. ELF notes happen to provide * all of that, so there is no need to invent something new. */ - buf = (u32*)per_cpu_ptr(crash_notes, cpu); + buf = (u32 *)per_cpu_ptr(crash_notes, cpu); if (!buf) return; memset(&prstatus, 0, sizeof(prstatus)); prstatus.pr_pid = current->pid; elf_core_copy_kernel_regs(&prstatus.pr_reg, regs); buf = append_elf_note(buf, KEXEC_CORE_NOTE_NAME, NT_PRSTATUS, - &prstatus, sizeof(prstatus)); + &prstatus, sizeof(prstatus)); final_note(buf); } @@ -1230,8 +1228,7 @@ static int __init crash_notes_memory_init(void) /* Allocate memory for saving cpu registers. */ crash_notes = alloc_percpu(note_buf_t); if (!crash_notes) { - printk("Kexec: Memory allocation for saving cpu register" - " states failed\n"); + pr_warn("Kexec: Memory allocation for saving cpu register states failed\n"); return -ENOMEM; } return 0; @@ -1253,10 +1250,10 @@ subsys_initcall(crash_notes_memory_init); * * The function returns 0 on success and -EINVAL on failure. */ -static int __init parse_crashkernel_mem(char *cmdline, - unsigned long long system_ram, - unsigned long long *crash_size, - unsigned long long *crash_base) +static int __init parse_crashkernel_mem(char *cmdline, + unsigned long long system_ram, + unsigned long long *crash_size, + unsigned long long *crash_base) { char *cur = cmdline, *tmp; @@ -1267,12 +1264,12 @@ static int __init parse_crashkernel_mem(char *cmdline, /* get the start of the range */ start = memparse(cur, &tmp); if (cur == tmp) { - pr_warning("crashkernel: Memory value expected\n"); + pr_warn("crashkernel: Memory value expected\n"); return -EINVAL; } cur = tmp; if (*cur != '-') { - pr_warning("crashkernel: '-' expected\n"); + pr_warn("crashkernel: '-' expected\n"); return -EINVAL; } cur++; @@ -1281,31 +1278,30 @@ static int __init parse_crashkernel_mem(char *cmdline, if (*cur != ':') { end = memparse(cur, &tmp); if (cur == tmp) { - pr_warning("crashkernel: Memory " - "value expected\n"); + pr_warn("crashkernel: Memory value expected\n"); return -EINVAL; } cur = tmp; if (end <= start) { - pr_warning("crashkernel: end <= start\n"); + pr_warn("crashkernel: end <= start\n"); return -EINVAL; } } if (*cur != ':') { - pr_warning("crashkernel: ':' expected\n"); + pr_warn("crashkernel: ':' expected\n"); return -EINVAL; } cur++; size = memparse(cur, &tmp); if (cur == tmp) { - pr_warning("Memory value expected\n"); + pr_warn("Memory value expected\n"); return -EINVAL; } cur = tmp; if (size >= system_ram) { - pr_warning("crashkernel: invalid size\n"); + pr_warn("crashkernel: invalid size\n"); return -EINVAL; } @@ -1323,8 +1319,7 @@ static int __init parse_crashkernel_mem(char *cmdline, cur++; *crash_base = memparse(cur, &tmp); if (cur == tmp) { - pr_warning("Memory value expected " - "after '@'\n"); + pr_warn("Memory value expected after '@'\n"); return -EINVAL; } } @@ -1336,26 +1331,26 @@ static int __init parse_crashkernel_mem(char *cmdline, /* * That function parses "simple" (old) crashkernel command lines like * - * crashkernel=size[@offset] + * crashkernel=size[@offset] * * It returns 0 on success and -EINVAL on failure. */ -static int __init parse_crashkernel_simple(char *cmdline, - unsigned long long *crash_size, - unsigned long long *crash_base) +static int __init parse_crashkernel_simple(char *cmdline, + unsigned long long *crash_size, + unsigned long long *crash_base) { char *cur = cmdline; *crash_size = memparse(cmdline, &cur); if (cmdline == cur) { - pr_warning("crashkernel: memory value expected\n"); + pr_warn("crashkernel: memory value expected\n"); return -EINVAL; } if (*cur == '@') *crash_base = memparse(cur+1, &cur); else if (*cur != ' ' && *cur != '\0') { - pr_warning("crashkernel: unrecognized char\n"); + pr_warn("crashkernel: unrecognized char\n"); return -EINVAL; } @@ -1691,7 +1686,7 @@ int kernel_kexec(void) * CPU hotplug again; so re-enable it here. */ cpu_hotplug_enable(); - printk(KERN_EMERG "Starting new kernel\n"); + pr_emerg("Starting new kernel\n"); machine_shutdown(); } -- cgit v1.2.3 From 3afb69cb5572b3c8c898c00880803cf1a49852c4 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Fri, 6 Jun 2014 14:37:10 -0700 Subject: idr: fix overflow bug during maximum ID calculation at maximum height idr_replace() open-codes the logic to calculate the maximum valid ID given the height of the idr tree; unfortunately, the open-coded logic doesn't account for the fact that the top layer may have unused slots and over-shifts the limit to zero when the tree is at its maximum height. The following test code shows it fails to replace the value for id=((1<<27)+42): static void test5(void) { int id; DEFINE_IDR(test_idr); #define TEST5_START ((1<<27)+42) /* use the highest layer */ printk(KERN_INFO "Start test5\n"); id = idr_alloc(&test_idr, (void *)1, TEST5_START, 0, GFP_KERNEL); BUG_ON(id != TEST5_START); TEST_BUG_ON(idr_replace(&test_idr, (void *)2, TEST5_START) != (void *)1); idr_destroy(&test_idr); printk(KERN_INFO "End of test5\n"); } Fix the bug by using idr_max() which correctly takes into account the maximum allowed shift. sub_alloc() shares the same problem and may incorrectly fail with -EAGAIN; however, this bug doesn't affect correct operation because idr_get_empty_slot(), which already uses idr_max(), retries with the increased @id in such cases. [tj@kernel.org: Updated patch description.] Signed-off-by: Lai Jiangshan Acked-by: Tejun Heo Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/idr.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/lib/idr.c b/lib/idr.c index 2642fa8e424d..4df67928816e 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -249,7 +249,7 @@ static int sub_alloc(struct idr *idp, int *starting_id, struct idr_layer **pa, id = (id | ((1 << (IDR_BITS * l)) - 1)) + 1; /* if already at the top layer, we need to grow */ - if (id >= 1 << (idp->layers * IDR_BITS)) { + if (id > idr_max(idp->layers)) { *starting_id = id; return -EAGAIN; } @@ -811,12 +811,10 @@ void *idr_replace(struct idr *idp, void *ptr, int id) if (!p) return ERR_PTR(-EINVAL); - n = (p->layer+1) * IDR_BITS; - - if (id >= (1 << n)) + if (id > idr_max(p->layer + 1)) return ERR_PTR(-EINVAL); - n -= IDR_BITS; + n = p->layer * IDR_BITS; while ((n > 0) && p) { p = p->ary[(id >> n) & IDR_MASK]; n -= IDR_BITS; -- cgit v1.2.3 From 8f9f665a707721146f24a892b1a0da1ab4da1d58 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Fri, 6 Jun 2014 14:37:11 -0700 Subject: idr: fix unexpected ID-removal when idr_remove(unallocated_id) If unallocated_id = (ANY * idr_max(idp->layers) + existing_id) is passed to idr_remove(). The existing_id will be removed unexpectedly. The following test shows this unexpected id-removal: static void test4(void) { int id; DEFINE_IDR(test_idr); printk(KERN_INFO "Start test4\n"); id = idr_alloc(&test_idr, (void *)1, 42, 43, GFP_KERNEL); BUG_ON(id != 42); idr_remove(&test_idr, 42 + IDR_SIZE); TEST_BUG_ON(idr_find(&test_idr, 42) != (void *)1); idr_destroy(&test_idr); printk(KERN_INFO "End of test4\n"); } ida_remove() shares the similar problem. It happens only when the caller tries to free an unallocated ID which is the caller's fault. It is not a bug. But it is better to add the proper check and complain rather than removing an existing_id silently. Signed-off-by: Lai Jiangshan Acked-by: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/idr.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/lib/idr.c b/lib/idr.c index 4df67928816e..c4afd94bdf69 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -562,6 +562,11 @@ void idr_remove(struct idr *idp, int id) if (id < 0) return; + if (id > idr_max(idp->layers)) { + idr_remove_warning(id); + return; + } + sub_remove(idp, (idp->layers - 1) * IDR_BITS, id); if (idp->top && idp->top->count == 1 && (idp->layers > 1) && idp->top->ary[0]) { @@ -1025,6 +1030,9 @@ void ida_remove(struct ida *ida, int id) int n; struct ida_bitmap *bitmap; + if (idr_id > idr_max(ida->idr.layers)) + goto err; + /* clear full bits while looking up the leaf idr_layer */ while ((shift > 0) && p) { n = (idr_id >> shift) & IDR_MASK; -- cgit v1.2.3 From aef0f62e87122c0fb90d5da660fd131acd0a9d67 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Fri, 6 Jun 2014 14:37:12 -0700 Subject: idr: fix NULL pointer dereference when ida_remove(unallocated_id) If the ida has at least one existing id, and when an unallocated ID which meets a certain condition is passed to the ida_remove(), the system will crash because it hits NULL pointer dereference. The condition is that the unallocated ID shares the same lowest idr layer with the existing ID, but the idr slot would be different if the unallocated ID were to be allocated. In this case the matching idr slot for the unallocated_id is NULL, causing @bitmap to be NULL which the function dereferences without checking crashing the kernel. See the test code: static void test3(void) { int id; DEFINE_IDA(test_ida); printk(KERN_INFO "Start test3\n"); if (ida_pre_get(&test_ida, GFP_KERNEL) < 0) return; if (ida_get_new(&test_ida, &id) < 0) return; ida_remove(&test_ida, 4000); /* bug: null deference here */ printk(KERN_INFO "End of test3\n"); } It happens only when the caller tries to free an unallocated ID which is the caller's fault. It is not a bug. But it is better to add the proper check and complain rather than crashing the kernel. [tj@kernel.org: updated patch description] Signed-off-by: Lai Jiangshan Acked-by: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/idr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/idr.c b/lib/idr.c index c4afd94bdf69..36ff732fd2a6 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -1048,7 +1048,7 @@ void ida_remove(struct ida *ida, int id) __clear_bit(n, p->bitmap); bitmap = (void *)p->ary[n]; - if (!test_bit(offset, bitmap->bitmap)) + if (!bitmap || !test_bit(offset, bitmap->bitmap)) goto err; /* update bitmap and remove it if empty */ -- cgit v1.2.3 From b93804b2fcdb35cc45f95ad77cbe23cc620f6593 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Fri, 6 Jun 2014 14:37:13 -0700 Subject: idr: fix idr_replace()'s returned error code When the smaller id is not found, idr_replace() returns -ENOENT. But when the id is bigger enough, idr_replace() returns -EINVAL, actually there is no difference between these two kinds of ids. These are all unallocated id, the return values of the idr_replace() for these ids should be the same: -ENOENT. Signed-off-by: Lai Jiangshan Acked-by: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/idr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/idr.c b/lib/idr.c index 36ff732fd2a6..e79e051bddc1 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -814,10 +814,10 @@ void *idr_replace(struct idr *idp, void *ptr, int id) p = idp->top; if (!p) - return ERR_PTR(-EINVAL); + return ERR_PTR(-ENOENT); if (id > idr_max(p->layer + 1)) - return ERR_PTR(-EINVAL); + return ERR_PTR(-ENOENT); n = p->layer * IDR_BITS; while ((n > 0) && p) { -- cgit v1.2.3 From aefb76829742803751725bc75bcdc43fe803ac22 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Fri, 6 Jun 2014 14:37:13 -0700 Subject: idr: don't need to shink the free list when idr_remove() After idr subsystem is changed to RCU-awared, the free layer will not go to the free list. The free list will not be filled up when idr_remove(). So we don't need to shink it too. Signed-off-by: Lai Jiangshan Acked-by: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/idr.c | 16 ---------------- 1 file changed, 16 deletions(-) diff --git a/lib/idr.c b/lib/idr.c index e79e051bddc1..9ed37a7a031d 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -18,12 +18,6 @@ * pointer or what ever, we treat it as a (void *). You can pass this * id to a user for him to pass back at a later time. You then pass * that id to this code and it returns your pointer. - - * You can release ids at any time. When all ids are released, most of - * the memory is returned (we keep MAX_IDR_FREE) in a local pool so we - * don't need to go to the memory "store" during an id allocate, just - * so you don't need to be too concerned about locking and conflicts - * with the slab allocator. */ #ifndef TEST // to test in user space... @@ -584,16 +578,6 @@ void idr_remove(struct idr *idp, int id) bitmap_clear(to_free->bitmap, 0, IDR_SIZE); free_layer(idp, to_free); } - while (idp->id_free_cnt >= MAX_IDR_FREE) { - p = get_from_free_list(idp); - /* - * Note: we don't call the rcu callback here, since the only - * layers that fall into the freelist are those that have been - * preallocated. - */ - kmem_cache_free(idr_layer_cache, p); - } - return; } EXPORT_SYMBOL(idr_remove); -- cgit v1.2.3 From 15f3ec3f238a44181e1ae85b3cc2c27b9fece01b Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Fri, 6 Jun 2014 14:37:14 -0700 Subject: idr: reduce the unneeded check in free_layer() If "idr->hint == p" is true, it also implies "idr->hint" is true(not NULL). Signed-off-by: Lai Jiangshan Acked-by: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/idr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/idr.c b/lib/idr.c index 9ed37a7a031d..39158abebad1 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -145,7 +145,7 @@ static void idr_layer_rcu_free(struct rcu_head *head) static inline void free_layer(struct idr *idr, struct idr_layer *p) { - if (idr->hint && idr->hint == p) + if (idr->hint == p) RCU_INIT_POINTER(idr->hint, NULL); call_rcu(&p->rcu_head, idr_layer_rcu_free); } -- cgit v1.2.3 From dcbff5d1effbbd52be1ed9f2efb6c8d0445ad188 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Fri, 6 Jun 2014 14:37:15 -0700 Subject: idr: reorder the fields idr_layer->layer is always accessed in read path, move it in the front. idr_layer->bitmap is moved on the bottom. And rcu_head shares with bitmap due to they do not be accessed at the same time. idr->id_free/id_free_cnt/lock are free list fields, and moved to the bottom. They will be removed in near future. Signed-off-by: Lai Jiangshan Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/idr.h | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/include/linux/idr.h b/include/linux/idr.h index 6af3400b9b2f..013fd9bc4cb6 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -29,21 +29,24 @@ struct idr_layer { int prefix; /* the ID prefix of this idr_layer */ - DECLARE_BITMAP(bitmap, IDR_SIZE); /* A zero bit means "space here" */ + int layer; /* distance from leaf */ struct idr_layer __rcu *ary[1< Date: Fri, 6 Jun 2014 14:37:16 -0700 Subject: rapidio/tsi721: use pci_enable_msix_exact() instead of pci_enable_msix() As result of deprecation of MSI-X/MSI enablement functions pci_enable_msix() and pci_enable_msi_block() all drivers using these two interfaces need to be updated to use the new pci_enable_msi_range() or pci_enable_msi_exact() and pci_enable_msix_range() or pci_enable_msix_exact() interfaces. The patch has no runtime effect. Signed-off-by: Alexander Gordeev Cc: Matt Porter Acked-by: Alexandre Bounine Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rapidio/devices/tsi721.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/rapidio/devices/tsi721.c b/drivers/rapidio/devices/tsi721.c index 1753dc693c15..2ca1a0b3ad57 100644 --- a/drivers/rapidio/devices/tsi721.c +++ b/drivers/rapidio/devices/tsi721.c @@ -768,15 +768,10 @@ static int tsi721_enable_msix(struct tsi721_device *priv) } #endif /* CONFIG_RAPIDIO_DMA_ENGINE */ - err = pci_enable_msix(priv->pdev, entries, ARRAY_SIZE(entries)); + err = pci_enable_msix_exact(priv->pdev, entries, ARRAY_SIZE(entries)); if (err) { - if (err > 0) - dev_info(&priv->pdev->dev, - "Only %d MSI-X vectors available, " - "not using MSI-X\n", err); - else - dev_err(&priv->pdev->dev, - "Failed to enable MSI-X (err=%d)\n", err); + dev_err(&priv->pdev->dev, + "Failed to enable MSI-X (err=%d)\n", err); return err; } -- cgit v1.2.3 From f88083005ab319abba5d0b2e4e997558245493c8 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 6 Jun 2014 14:37:17 -0700 Subject: sysctl: clean up char buffer arguments When writing to a sysctl string, each write, regardless of VFS position, began writing the string from the start. This meant the contents of the last write to the sysctl controlled the string contents instead of the first. This misbehavior was featured in an exploit against Chrome OS. While it's not in itself a vulnerability, it's a weirdness that isn't on the mind of most auditors: "This filter looks correct, the first line written would not be meaningful to sysctl" doesn't apply here, since the size of the write and the contents of the final write are what matter when writing to sysctls. This adds the sysctl kernel.sysctl_writes_strict to control the write behavior. The default (0) reports when VFS position is non-0 on a write, but retains legacy behavior, -1 disables the warning, and 1 enables the position-respecting behavior. The long-term plan here is to wait for userspace to be fixed in response to the new warning and to then switch the default kernel behavior to the new position-respecting behavior. This patch (of 4): The char buffer arguments are needlessly cast in weird places. Clean it up so things are easier to read. Signed-off-by: Kees Cook Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/sysctl.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 40ce2d983b12..3e214beabbe9 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -1703,8 +1703,8 @@ int __init sysctl_init(void) #ifdef CONFIG_PROC_SYSCTL -static int _proc_do_string(void* data, int maxlen, int write, - void __user *buffer, +static int _proc_do_string(char *data, int maxlen, int write, + char __user *buffer, size_t *lenp, loff_t *ppos) { size_t len; @@ -1730,7 +1730,7 @@ static int _proc_do_string(void* data, int maxlen, int write, len = maxlen-1; if(copy_from_user(data, buffer, len)) return -EFAULT; - ((char *) data)[len] = 0; + data[len] = 0; *ppos += *lenp; } else { len = strlen(data); @@ -1748,10 +1748,10 @@ static int _proc_do_string(void* data, int maxlen, int write, if (len > *lenp) len = *lenp; if (len) - if(copy_to_user(buffer, data, len)) + if (copy_to_user(buffer, data, len)) return -EFAULT; if (len < *lenp) { - if(put_user('\n', ((char __user *) buffer) + len)) + if (put_user('\n', buffer + len)) return -EFAULT; len++; } @@ -1781,8 +1781,8 @@ static int _proc_do_string(void* data, int maxlen, int write, int proc_dostring(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { - return _proc_do_string(table->data, table->maxlen, write, - buffer, lenp, ppos); + return _proc_do_string((char *)(table->data), table->maxlen, write, + (char __user *)buffer, lenp, ppos); } static size_t proc_skip_spaces(char **buf) -- cgit v1.2.3 From 2ca9bb456ada8bcbdc8f77f8fc78207653bbaa92 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 6 Jun 2014 14:37:18 -0700 Subject: sysctl: refactor sysctl string writing logic Consolidate buffer length checking with new-line/end-of-line checking. Additionally, instead of reading user memory twice, just do the assignment during the loop. This change doesn't affect the potential races here. It was already possible to read a sysctl that was in the middle of a write. In both cases, the string will always be NULL terminated. The pre-existing race remains a problem to be solved. Signed-off-by: Kees Cook Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/sysctl.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 3e214beabbe9..ac6847feaa83 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -1717,21 +1717,18 @@ static int _proc_do_string(char *data, int maxlen, int write, } if (write) { + /* Start writing from beginning of buffer. */ len = 0; + *ppos += *lenp; p = buffer; - while (len < *lenp) { + while ((p - buffer) < *lenp && len < maxlen - 1) { if (get_user(c, p++)) return -EFAULT; if (c == 0 || c == '\n') break; - len++; + data[len++] = c; } - if (len >= maxlen) - len = maxlen-1; - if(copy_from_user(data, buffer, len)) - return -EFAULT; data[len] = 0; - *ppos += *lenp; } else { len = strlen(data); if (len > maxlen) -- cgit v1.2.3 From f4aacea2f5d1a5f7e3154e967d70cf3f711bcd61 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 6 Jun 2014 14:37:19 -0700 Subject: sysctl: allow for strict write position handling When writing to a sysctl string, each write, regardless of VFS position, begins writing the string from the start. This means the contents of the last write to the sysctl controls the string contents instead of the first: open("/proc/sys/kernel/modprobe", O_WRONLY) = 1 write(1, "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"..., 4096) = 4096 write(1, "/bin/true", 9) = 9 close(1) = 0 $ cat /proc/sys/kernel/modprobe /bin/true Expected behaviour would be to have the sysctl be "AAAA..." capped at maxlen (in this case KMOD_PATH_LEN: 256), instead of truncating to the contents of the second write. Similarly, multiple short writes would not append to the sysctl. The old behavior is unlike regular POSIX files enough that doing audits of software that interact with sysctls can end up in unexpected or dangerous situations. For example, "as long as the input starts with a trusted path" turns out to be an insufficient filter, as what must also happen is for the input to be entirely contained in a single write syscall -- not a common consideration, especially for high level tools. This provides kernel.sysctl_writes_strict as a way to make this behavior act in a less surprising manner for strings, and disallows non-zero file position when writing numeric sysctls (similar to what is already done when reading from non-zero file positions). For now, the default (0) is to warn about non-zero file position use, but retain the legacy behavior. Setting this to -1 disables the warning, and setting this to 1 enables the file position respecting behavior. [akpm@linux-foundation.org: fix build] [akpm@linux-foundation.org: move misplaced hunk, per Randy] Signed-off-by: Kees Cook Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/sysctl/kernel.txt | 21 +++++++++++++ kernel/sysctl.c | 69 +++++++++++++++++++++++++++++++++++++++-- 2 files changed, 88 insertions(+), 2 deletions(-) diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index 9886c3d57fc2..708bb7f1b7e0 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -77,6 +77,7 @@ show up in /proc/sys/kernel: - shmmni - stop-a [ SPARC only ] - sysrq ==> Documentation/sysrq.txt +- sysctl_writes_strict - tainted - threads-max - unknown_nmi_panic @@ -762,6 +763,26 @@ without users and with a dead originative process will be destroyed. ============================================================== +sysctl_writes_strict: + +Control how file position affects the behavior of updating sysctl values +via the /proc/sys interface: + + -1 - Legacy per-write sysctl value handling, with no printk warnings. + Each write syscall must fully contain the sysctl value to be + written, and multiple writes on the same sysctl file descriptor + will rewrite the sysctl value, regardless of file position. + 0 - (default) Same behavior as above, but warn about processes that + perform writes to a sysctl file descriptor when the file position + is not 0. + 1 - Respect file position when writing sysctl strings. Multiple writes + will append to the sysctl value buffer. Anything past the max length + of the sysctl value buffer will be ignored. Writes to numeric sysctl + entries must always be at file position 0 and the value must be + fully contained in the buffer sent in the write syscall. + +============================================================== + tainted: Non-zero if the kernel has been tainted. Numeric values, which diff --git a/kernel/sysctl.c b/kernel/sysctl.c index ac6847feaa83..7a910b9081e8 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -173,6 +173,13 @@ extern int no_unaligned_warning; #endif #ifdef CONFIG_PROC_SYSCTL + +#define SYSCTL_WRITES_LEGACY -1 +#define SYSCTL_WRITES_WARN 0 +#define SYSCTL_WRITES_STRICT 1 + +static int sysctl_writes_strict = SYSCTL_WRITES_WARN; + static int proc_do_cad_pid(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos); static int proc_taint(struct ctl_table *table, int write, @@ -495,6 +502,15 @@ static struct ctl_table kern_table[] = { .mode = 0644, .proc_handler = proc_taint, }, + { + .procname = "sysctl_writes_strict", + .data = &sysctl_writes_strict, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = &neg_one, + .extra2 = &one, + }, #endif #ifdef CONFIG_LATENCYTOP { @@ -1717,8 +1733,20 @@ static int _proc_do_string(char *data, int maxlen, int write, } if (write) { - /* Start writing from beginning of buffer. */ - len = 0; + if (sysctl_writes_strict == SYSCTL_WRITES_STRICT) { + /* Only continue writes not past the end of buffer. */ + len = strlen(data); + if (len > maxlen - 1) + len = maxlen - 1; + + if (*ppos > len) + return 0; + len = *ppos; + } else { + /* Start writing from beginning of buffer. */ + len = 0; + } + *ppos += *lenp; p = buffer; while ((p - buffer) < *lenp && len < maxlen - 1) { @@ -1758,6 +1786,14 @@ static int _proc_do_string(char *data, int maxlen, int write, return 0; } +static void warn_sysctl_write(struct ctl_table *table) +{ + pr_warn_once("%s wrote to %s when file position was not 0!\n" + "This will not be supported in the future. To silence this\n" + "warning, set kernel.sysctl_writes_strict = -1\n", + current->comm, table->procname); +} + /** * proc_dostring - read a string sysctl * @table: the sysctl table @@ -1778,6 +1814,9 @@ static int _proc_do_string(char *data, int maxlen, int write, int proc_dostring(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { + if (write && *ppos && sysctl_writes_strict == SYSCTL_WRITES_WARN) + warn_sysctl_write(table); + return _proc_do_string((char *)(table->data), table->maxlen, write, (char __user *)buffer, lenp, ppos); } @@ -1953,6 +1992,18 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table, conv = do_proc_dointvec_conv; if (write) { + if (*ppos) { + switch (sysctl_writes_strict) { + case SYSCTL_WRITES_STRICT: + goto out; + case SYSCTL_WRITES_WARN: + warn_sysctl_write(table); + break; + default: + break; + } + } + if (left > PAGE_SIZE - 1) left = PAGE_SIZE - 1; page = __get_free_page(GFP_TEMPORARY); @@ -2010,6 +2061,7 @@ free: return err ? : -EINVAL; } *lenp -= left; +out: *ppos += *lenp; return err; } @@ -2202,6 +2254,18 @@ static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int left = *lenp; if (write) { + if (*ppos) { + switch (sysctl_writes_strict) { + case SYSCTL_WRITES_STRICT: + goto out; + case SYSCTL_WRITES_WARN: + warn_sysctl_write(table); + break; + default: + break; + } + } + if (left > PAGE_SIZE - 1) left = PAGE_SIZE - 1; page = __get_free_page(GFP_TEMPORARY); @@ -2257,6 +2321,7 @@ free: return err ? : -EINVAL; } *lenp -= left; +out: *ppos += *lenp; return err; } -- cgit v1.2.3 From 24fe831c17ab8149413874f2fd4e5c8a41fcd294 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 6 Jun 2014 14:37:21 -0700 Subject: tools/testing/selftests/sysctl: validate sysctl_writes_strict This adds several behavioral tests to sysctl string and number writing to detect unexpected cases that behaved differently when the sysctl kernel.sysctl_writes_strict != 1. [ original ] root@localhost:~# make test_num == Testing sysctl behavior against /proc/sys/kernel/domainname == Writing test file ... ok Checking sysctl is not set to test value ... ok Writing sysctl from shell ... ok Resetting sysctl to original value ... ok Writing entire sysctl in single write ... ok Writing middle of sysctl after synchronized seek ... FAIL Writing beyond end of sysctl ... FAIL Writing sysctl with multiple long writes ... FAIL Writing entire sysctl in short writes ... FAIL Writing middle of sysctl after unsynchronized seek ... ok Checking sysctl maxlen is at least 65 ... ok Checking sysctl keeps original string on overflow append ... FAIL Checking sysctl stays NULL terminated on write ... ok Checking sysctl stays NULL terminated on overwrite ... ok make: *** [test_num] Error 1 root@localhost:~# make test_string == Testing sysctl behavior against /proc/sys/vm/swappiness == Writing test file ... ok Checking sysctl is not set to test value ... ok Writing sysctl from shell ... ok Resetting sysctl to original value ... ok Writing entire sysctl in single write ... ok Writing middle of sysctl after synchronized seek ... FAIL Writing beyond end of sysctl ... FAIL Writing sysctl with multiple long writes ... ok make: *** [test_string] Error 1 [ with CONFIG_PROC_SYSCTL_STRICT_WRITES ] root@localhost:~# make run_tests == Testing sysctl behavior against /proc/sys/kernel/domainname == Writing test file ... ok Checking sysctl is not set to test value ... ok Writing sysctl from shell ... ok Resetting sysctl to original value ... ok Writing entire sysctl in single write ... ok Writing middle of sysctl after synchronized seek ... ok Writing beyond end of sysctl ... ok Writing sysctl with multiple long writes ... ok Writing entire sysctl in short writes ... ok Writing middle of sysctl after unsynchronized seek ... ok Checking sysctl maxlen is at least 65 ... ok Checking sysctl keeps original string on overflow append ... ok Checking sysctl stays NULL terminated on write ... ok Checking sysctl stays NULL terminated on overwrite ... ok == Testing sysctl behavior against /proc/sys/vm/swappiness == Writing test file ... ok Checking sysctl is not set to test value ... ok Writing sysctl from shell ... ok Resetting sysctl to original value ... ok Writing entire sysctl in single write ... ok Writing middle of sysctl after synchronized seek ... ok Writing beyond end of sysctl ... ok Writing sysctl with multiple long writes ... ok Signed-off-by: Kees Cook Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- tools/testing/selftests/Makefile | 1 + tools/testing/selftests/sysctl/Makefile | 19 +++++ tools/testing/selftests/sysctl/common_tests | 109 ++++++++++++++++++++++++ tools/testing/selftests/sysctl/run_numerictests | 10 +++ tools/testing/selftests/sysctl/run_stringtests | 77 +++++++++++++++++ 5 files changed, 216 insertions(+) create mode 100644 tools/testing/selftests/sysctl/Makefile create mode 100644 tools/testing/selftests/sysctl/common_tests create mode 100644 tools/testing/selftests/sysctl/run_numerictests create mode 100644 tools/testing/selftests/sysctl/run_stringtests diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index 32487ed18354..e66e710cc595 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -10,6 +10,7 @@ TARGETS += timers TARGETS += vm TARGETS += powerpc TARGETS += user +TARGETS += sysctl all: for TARGET in $(TARGETS); do \ diff --git a/tools/testing/selftests/sysctl/Makefile b/tools/testing/selftests/sysctl/Makefile new file mode 100644 index 000000000000..0a92adaf0865 --- /dev/null +++ b/tools/testing/selftests/sysctl/Makefile @@ -0,0 +1,19 @@ +# Makefile for sysctl selftests. +# Expects kernel.sysctl_writes_strict=1. + +# No binaries, but make sure arg-less "make" doesn't trigger "run_tests". +all: + +# Allow specific tests to be selected. +test_num: + @/bin/sh ./run_numerictests + +test_string: + @/bin/sh ./run_stringtests + +run_tests: all test_num test_string + +# Nothing to clean up. +clean: + +.PHONY: all run_tests clean test_num test_string diff --git a/tools/testing/selftests/sysctl/common_tests b/tools/testing/selftests/sysctl/common_tests new file mode 100644 index 000000000000..17d534b1b7b4 --- /dev/null +++ b/tools/testing/selftests/sysctl/common_tests @@ -0,0 +1,109 @@ +#!/bin/sh + +TEST_FILE=$(mktemp) + +echo "== Testing sysctl behavior against ${TARGET} ==" + +set_orig() +{ + echo "${ORIG}" > "${TARGET}" +} + +set_test() +{ + echo "${TEST_STR}" > "${TARGET}" +} + +verify() +{ + local seen + seen=$(cat "$1") + if [ "${seen}" != "${TEST_STR}" ]; then + return 1 + fi + return 0 +} + +trap 'set_orig; rm -f "${TEST_FILE}"' EXIT + +rc=0 + +echo -n "Writing test file ... " +echo "${TEST_STR}" > "${TEST_FILE}" +if ! verify "${TEST_FILE}"; then + echo "FAIL" >&2 + exit 1 +else + echo "ok" +fi + +echo -n "Checking sysctl is not set to test value ... " +if verify "${TARGET}"; then + echo "FAIL" >&2 + exit 1 +else + echo "ok" +fi + +echo -n "Writing sysctl from shell ... " +set_test +if ! verify "${TARGET}"; then + echo "FAIL" >&2 + exit 1 +else + echo "ok" +fi + +echo -n "Resetting sysctl to original value ... " +set_orig +if verify "${TARGET}"; then + echo "FAIL" >&2 + exit 1 +else + echo "ok" +fi + +# Now that we've validated the sanity of "set_test" and "set_orig", +# we can use those functions to set starting states before running +# specific behavioral tests. + +echo -n "Writing entire sysctl in single write ... " +set_orig +dd if="${TEST_FILE}" of="${TARGET}" bs=4096 2>/dev/null +if ! verify "${TARGET}"; then + echo "FAIL" >&2 + rc=1 +else + echo "ok" +fi + +echo -n "Writing middle of sysctl after synchronized seek ... " +set_test +dd if="${TEST_FILE}" of="${TARGET}" bs=1 seek=1 skip=1 2>/dev/null +if ! verify "${TARGET}"; then + echo "FAIL" >&2 + rc=1 +else + echo "ok" +fi + +echo -n "Writing beyond end of sysctl ... " +set_orig +dd if="${TEST_FILE}" of="${TARGET}" bs=20 seek=2 2>/dev/null +if verify "${TARGET}"; then + echo "FAIL" >&2 + rc=1 +else + echo "ok" +fi + +echo -n "Writing sysctl with multiple long writes ... " +set_orig +(perl -e 'print "A" x 50;'; echo "${TEST_STR}") | \ + dd of="${TARGET}" bs=50 2>/dev/null +if verify "${TARGET}"; then + echo "FAIL" >&2 + rc=1 +else + echo "ok" +fi diff --git a/tools/testing/selftests/sysctl/run_numerictests b/tools/testing/selftests/sysctl/run_numerictests new file mode 100644 index 000000000000..8510f93f2d14 --- /dev/null +++ b/tools/testing/selftests/sysctl/run_numerictests @@ -0,0 +1,10 @@ +#!/bin/sh + +SYSCTL="/proc/sys" +TARGET="${SYSCTL}/vm/swappiness" +ORIG=$(cat "${TARGET}") +TEST_STR=$(( $ORIG + 1 )) + +. ./common_tests + +exit $rc diff --git a/tools/testing/selftests/sysctl/run_stringtests b/tools/testing/selftests/sysctl/run_stringtests new file mode 100644 index 000000000000..90a9293d520c --- /dev/null +++ b/tools/testing/selftests/sysctl/run_stringtests @@ -0,0 +1,77 @@ +#!/bin/sh + +SYSCTL="/proc/sys" +TARGET="${SYSCTL}/kernel/domainname" +ORIG=$(cat "${TARGET}") +TEST_STR="Testing sysctl" + +. ./common_tests + +# Only string sysctls support seeking/appending. +MAXLEN=65 + +echo -n "Writing entire sysctl in short writes ... " +set_orig +dd if="${TEST_FILE}" of="${TARGET}" bs=1 2>/dev/null +if ! verify "${TARGET}"; then + echo "FAIL" >&2 + rc=1 +else + echo "ok" +fi + +echo -n "Writing middle of sysctl after unsynchronized seek ... " +set_test +dd if="${TEST_FILE}" of="${TARGET}" bs=1 seek=1 2>/dev/null +if verify "${TARGET}"; then + echo "FAIL" >&2 + rc=1 +else + echo "ok" +fi + +echo -n "Checking sysctl maxlen is at least $MAXLEN ... " +set_orig +perl -e 'print "A" x ('"${MAXLEN}"'-2), "B";' | \ + dd of="${TARGET}" bs="${MAXLEN}" 2>/dev/null +if ! grep -q B "${TARGET}"; then + echo "FAIL" >&2 + rc=1 +else + echo "ok" +fi + +echo -n "Checking sysctl keeps original string on overflow append ... " +set_orig +perl -e 'print "A" x ('"${MAXLEN}"'-1), "B";' | \ + dd of="${TARGET}" bs=$(( MAXLEN - 1 )) 2>/dev/null +if grep -q B "${TARGET}"; then + echo "FAIL" >&2 + rc=1 +else + echo "ok" +fi + +echo -n "Checking sysctl stays NULL terminated on write ... " +set_orig +perl -e 'print "A" x ('"${MAXLEN}"'-1), "B";' | \ + dd of="${TARGET}" bs="${MAXLEN}" 2>/dev/null +if grep -q B "${TARGET}"; then + echo "FAIL" >&2 + rc=1 +else + echo "ok" +fi + +echo -n "Checking sysctl stays NULL terminated on overwrite ... " +set_orig +perl -e 'print "A" x ('"${MAXLEN}"'-1), "BB";' | \ + dd of="${TARGET}" bs=$(( $MAXLEN + 1 )) 2>/dev/null +if grep -q B "${TARGET}"; then + echo "FAIL" >&2 + rc=1 +else + echo "ok" +fi + +exit $rc -- cgit v1.2.3 From 68a9a435e4efb63c49a0c0a25756e3b71a5634ed Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:37:21 -0700 Subject: kernel/user_namespace.c: kernel-doc/checkpatch fixes -uid->gid -split some function declarations -if/then/else warning Signed-off-by: Fabian Frederick Cc: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/user_namespace.c | 33 ++++++++++++++++++++------------- 1 file changed, 20 insertions(+), 13 deletions(-) diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c index bf71b4b2d632..fcc02560fd6b 100644 --- a/kernel/user_namespace.c +++ b/kernel/user_namespace.c @@ -286,7 +286,7 @@ EXPORT_SYMBOL(from_kuid_munged); /** * make_kgid - Map a user-namespace gid pair into a kgid. * @ns: User namespace that the gid is in - * @uid: group identifier + * @gid: group identifier * * Maps a user-namespace gid pair into a kernel internal kgid, * and returns that kgid. @@ -482,7 +482,8 @@ static int projid_m_show(struct seq_file *seq, void *v) return 0; } -static void *m_start(struct seq_file *seq, loff_t *ppos, struct uid_gid_map *map) +static void *m_start(struct seq_file *seq, loff_t *ppos, + struct uid_gid_map *map) { struct uid_gid_extent *extent = NULL; loff_t pos = *ppos; @@ -546,7 +547,8 @@ struct seq_operations proc_projid_seq_operations = { .show = projid_m_show, }; -static bool mappings_overlap(struct uid_gid_map *new_map, struct uid_gid_extent *extent) +static bool mappings_overlap(struct uid_gid_map *new_map, + struct uid_gid_extent *extent) { u32 upper_first, lower_first, upper_last, lower_last; unsigned idx; @@ -653,7 +655,7 @@ static ssize_t map_write(struct file *file, const char __user *buf, ret = -EINVAL; pos = kbuf; new_map.nr_extents = 0; - for (;pos; pos = next_line) { + for (; pos; pos = next_line) { extent = &new_map.extent[new_map.nr_extents]; /* Find the end of line and ensure I don't look past it */ @@ -687,13 +689,16 @@ static ssize_t map_write(struct file *file, const char __user *buf, /* Verify we have been given valid starting values */ if ((extent->first == (u32) -1) || - (extent->lower_first == (u32) -1 )) + (extent->lower_first == (u32) -1)) goto out; - /* Verify count is not zero and does not cause the extent to wrap */ + /* Verify count is not zero and does not cause the + * extent to wrap + */ if ((extent->first + extent->count) <= extent->first) goto out; - if ((extent->lower_first + extent->count) <= extent->lower_first) + if ((extent->lower_first + extent->count) <= + extent->lower_first) goto out; /* Do the ranges in extent overlap any previous extents? */ @@ -751,7 +756,8 @@ out: return ret; } -ssize_t proc_uid_map_write(struct file *file, const char __user *buf, size_t size, loff_t *ppos) +ssize_t proc_uid_map_write(struct file *file, const char __user *buf, + size_t size, loff_t *ppos) { struct seq_file *seq = file->private_data; struct user_namespace *ns = seq->private; @@ -767,7 +773,8 @@ ssize_t proc_uid_map_write(struct file *file, const char __user *buf, size_t siz &ns->uid_map, &ns->parent->uid_map); } -ssize_t proc_gid_map_write(struct file *file, const char __user *buf, size_t size, loff_t *ppos) +ssize_t proc_gid_map_write(struct file *file, const char __user *buf, + size_t size, loff_t *ppos) { struct seq_file *seq = file->private_data; struct user_namespace *ns = seq->private; @@ -783,7 +790,8 @@ ssize_t proc_gid_map_write(struct file *file, const char __user *buf, size_t siz &ns->gid_map, &ns->parent->gid_map); } -ssize_t proc_projid_map_write(struct file *file, const char __user *buf, size_t size, loff_t *ppos) +ssize_t proc_projid_map_write(struct file *file, const char __user *buf, + size_t size, loff_t *ppos) { struct seq_file *seq = file->private_data; struct user_namespace *ns = seq->private; @@ -800,7 +808,7 @@ ssize_t proc_projid_map_write(struct file *file, const char __user *buf, size_t &ns->projid_map, &ns->parent->projid_map); } -static bool new_idmap_permitted(const struct file *file, +static bool new_idmap_permitted(const struct file *file, struct user_namespace *ns, int cap_setid, struct uid_gid_map *new_map) { @@ -811,8 +819,7 @@ static bool new_idmap_permitted(const struct file *file, kuid_t uid = make_kuid(ns->parent, id); if (uid_eq(uid, file->f_cred->fsuid)) return true; - } - else if (cap_setid == CAP_SETGID) { + } else if (cap_setid == CAP_SETGID) { kgid_t gid = make_kgid(ns->parent, id); if (gid_eq(gid, file->f_cred->fsgid)) return true; -- cgit v1.2.3 From d55875f5d52c067e2eff7536368596b4a96b3ade Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 6 Jun 2014 14:37:22 -0700 Subject: include/asm-generic/ioctl.h: fix _IOC_TYPECHECK sparse error When running sparse over drivers/media/v4l2-core/v4l2-ioctl.c I get these errors: drivers/media/v4l2-core/v4l2-ioctl.c:2043:9: error: bad integer constant expression drivers/media/v4l2-core/v4l2-ioctl.c:2044:9: error: bad integer constant expression drivers/media/v4l2-core/v4l2-ioctl.c:2045:9: error: bad integer constant expression drivers/media/v4l2-core/v4l2-ioctl.c:2046:9: error: bad integer constant expression etc. The root cause of that turns out to be in include/asm-generic/ioctl.h: #include /* provoke compile error for invalid uses of size argument */ extern unsigned int __invalid_size_argument_for_IOC; #define _IOC_TYPECHECK(t) \ ((sizeof(t) == sizeof(t[1]) && \ sizeof(t) < (1 << _IOC_SIZEBITS)) ? \ sizeof(t) : __invalid_size_argument_for_IOC) If it is defined as this (as is already done if __KERNEL__ is not defined): #define _IOC_TYPECHECK(t) (sizeof(t)) then all is well with the world. This patch allows sparse to work correctly. Signed-off-by: Hans Verkuil Reviewed-by: Josh Triplett Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-generic/ioctl.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/asm-generic/ioctl.h b/include/asm-generic/ioctl.h index d17295b290fa..297fb0d7cd6c 100644 --- a/include/asm-generic/ioctl.h +++ b/include/asm-generic/ioctl.h @@ -3,10 +3,15 @@ #include +#ifdef __CHECKER__ +#define _IOC_TYPECHECK(t) (sizeof(t)) +#else /* provoke compile error for invalid uses of size argument */ extern unsigned int __invalid_size_argument_for_IOC; #define _IOC_TYPECHECK(t) \ ((sizeof(t) == sizeof(t[1]) && \ sizeof(t) < (1 << _IOC_SIZEBITS)) ? \ sizeof(t) : __invalid_size_argument_for_IOC) +#endif + #endif /* _ASM_GENERIC_IOCTL_H */ -- cgit v1.2.3 From 0c89d67016081ac40109c5ed8ca7a698805203c2 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:37:23 -0700 Subject: fs/affs/file.c: remove unnecessary function parameters - affs_do_readpage_ofs is always called with from = 0 ie reading from page->index - File parameter is never used Signed-off-by: Fabian Frederick Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/affs/file.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/fs/affs/file.c b/fs/affs/file.c index 8669b6ecddee..fd168ef18516 100644 --- a/fs/affs/file.c +++ b/fs/affs/file.c @@ -498,34 +498,36 @@ affs_getemptyblk_ino(struct inode *inode, int block) } static int -affs_do_readpage_ofs(struct file *file, struct page *page, unsigned from, unsigned to) +affs_do_readpage_ofs(struct page *page, unsigned to) { struct inode *inode = page->mapping->host; struct super_block *sb = inode->i_sb; struct buffer_head *bh; char *data; + unsigned pos = 0; u32 bidx, boff, bsize; u32 tmp; - pr_debug("AFFS: read_page(%u, %ld, %d, %d)\n", (u32)inode->i_ino, page->index, from, to); - BUG_ON(from > to || to > PAGE_CACHE_SIZE); + pr_debug("AFFS: read_page(%u, %ld, 0, %d)\n", (u32)inode->i_ino, + page->index, to); + BUG_ON(to > PAGE_CACHE_SIZE); kmap(page); data = page_address(page); bsize = AFFS_SB(sb)->s_data_blksize; - tmp = (page->index << PAGE_CACHE_SHIFT) + from; + tmp = page->index << PAGE_CACHE_SHIFT; bidx = tmp / bsize; boff = tmp % bsize; - while (from < to) { + while (pos < to) { bh = affs_bread_ino(inode, bidx, 0); if (IS_ERR(bh)) return PTR_ERR(bh); - tmp = min(bsize - boff, to - from); - BUG_ON(from + tmp > to || tmp > bsize); - memcpy(data + from, AFFS_DATA(bh) + boff, tmp); + tmp = min(bsize - boff, to - pos); + BUG_ON(pos + tmp > to || tmp > bsize); + memcpy(data + pos, AFFS_DATA(bh) + boff, tmp); affs_brelse(bh); bidx++; - from += tmp; + pos += tmp; boff = 0; } flush_dcache_page(page); @@ -615,7 +617,7 @@ affs_readpage_ofs(struct file *file, struct page *page) memset(page_address(page) + to, 0, PAGE_CACHE_SIZE - to); } - err = affs_do_readpage_ofs(file, page, 0, to); + err = affs_do_readpage_ofs(page, to); if (!err) SetPageUptodate(page); unlock_page(page); @@ -651,7 +653,7 @@ static int affs_write_begin_ofs(struct file *file, struct address_space *mapping return 0; /* XXX: inefficient but safe in the face of short writes */ - err = affs_do_readpage_ofs(file, page, 0, PAGE_CACHE_SIZE); + err = affs_do_readpage_ofs(page, PAGE_CACHE_SIZE); if (err) { unlock_page(page); page_cache_release(page); -- cgit v1.2.3 From 0158de12b00e7f0e7821c706e91477b6079eb9e9 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:37:24 -0700 Subject: fs/affs: convert printk to pr_foo() -All printk(KERN_foo converted to pr_foo() -Default printk converted to pr_warn() -Add pr_fmt to affs.h Signed-off-by: Fabian Frederick Cc: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/affs/affs.h | 6 ++++++ fs/affs/amigaffs.c | 6 +++--- fs/affs/bitmap.c | 13 ++++++------- fs/affs/super.c | 24 +++++++++++------------- 4 files changed, 26 insertions(+), 23 deletions(-) diff --git a/fs/affs/affs.h b/fs/affs/affs.h index 25b23b1e7f22..347ee6fc5875 100644 --- a/fs/affs/affs.h +++ b/fs/affs/affs.h @@ -1,3 +1,9 @@ +#ifdef pr_fmt +#undef pr_fmt +#endif + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include #include #include diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c index 533a322c41c0..fa8ba6a6de4e 100644 --- a/fs/affs/amigaffs.c +++ b/fs/affs/amigaffs.c @@ -451,10 +451,10 @@ affs_error(struct super_block *sb, const char *function, const char *fmt, ...) vsnprintf(ErrorBuffer,sizeof(ErrorBuffer),fmt,args); va_end(args); - printk(KERN_CRIT "AFFS error (device %s): %s(): %s\n", sb->s_id, + pr_crit("error (device %s): %s(): %s\n", sb->s_id, function,ErrorBuffer); if (!(sb->s_flags & MS_RDONLY)) - printk(KERN_WARNING "AFFS: Remounting filesystem read-only\n"); + pr_warn("Remounting filesystem read-only\n"); sb->s_flags |= MS_RDONLY; } @@ -467,7 +467,7 @@ affs_warning(struct super_block *sb, const char *function, const char *fmt, ...) vsnprintf(ErrorBuffer,sizeof(ErrorBuffer),fmt,args); va_end(args); - printk(KERN_WARNING "AFFS warning (device %s): %s(): %s\n", sb->s_id, + pr_warn("(device %s): %s(): %s\n", sb->s_id, function,ErrorBuffer); } diff --git a/fs/affs/bitmap.c b/fs/affs/bitmap.c index a32246b8359e..d9559f5d2d1b 100644 --- a/fs/affs/bitmap.c +++ b/fs/affs/bitmap.c @@ -254,8 +254,7 @@ int affs_init_bitmap(struct super_block *sb, int *flags) return 0; if (!AFFS_ROOT_TAIL(sb, sbi->s_root_bh)->bm_flag) { - printk(KERN_NOTICE "AFFS: Bitmap invalid - mounting %s read only\n", - sb->s_id); + pr_notice("Bitmap invalid - mounting %s read only\n", sb->s_id); *flags |= MS_RDONLY; return 0; } @@ -268,7 +267,7 @@ int affs_init_bitmap(struct super_block *sb, int *flags) size = sbi->s_bmap_count * sizeof(*bm); bm = sbi->s_bitmap = kzalloc(size, GFP_KERNEL); if (!sbi->s_bitmap) { - printk(KERN_ERR "AFFS: Bitmap allocation failed\n"); + pr_err("Bitmap allocation failed\n"); return -ENOMEM; } @@ -282,13 +281,13 @@ int affs_init_bitmap(struct super_block *sb, int *flags) bm->bm_key = be32_to_cpu(bmap_blk[blk]); bh = affs_bread(sb, bm->bm_key); if (!bh) { - printk(KERN_ERR "AFFS: Cannot read bitmap\n"); + pr_err("Cannot read bitmap\n"); res = -EIO; goto out; } if (affs_checksum_block(sb, bh)) { - printk(KERN_WARNING "AFFS: Bitmap %u invalid - mounting %s read only.\n", - bm->bm_key, sb->s_id); + pr_warn("Bitmap %u invalid - mounting %s read only.\n", + bm->bm_key, sb->s_id); *flags |= MS_RDONLY; goto out; } @@ -304,7 +303,7 @@ int affs_init_bitmap(struct super_block *sb, int *flags) affs_brelse(bmap_bh); bmap_bh = affs_bread(sb, be32_to_cpu(bmap_blk[blk])); if (!bmap_bh) { - printk(KERN_ERR "AFFS: Cannot read bitmap extension\n"); + pr_err("Cannot read bitmap extension\n"); res = -EIO; goto out; } diff --git a/fs/affs/super.c b/fs/affs/super.c index 895ac7dc9dbf..507791263ec8 100644 --- a/fs/affs/super.c +++ b/fs/affs/super.c @@ -220,7 +220,7 @@ parse_options(char *options, kuid_t *uid, kgid_t *gid, int *mode, int *reserved, return 0; if (n != 512 && n != 1024 && n != 2048 && n != 4096) { - printk ("AFFS: Invalid blocksize (512, 1024, 2048, 4096 allowed)\n"); + pr_warn("Invalid blocksize (512, 1024, 2048, 4096 allowed)\n"); return 0; } *blocksize = n; @@ -285,8 +285,8 @@ parse_options(char *options, kuid_t *uid, kgid_t *gid, int *mode, int *reserved, /* Silently ignore the quota options */ break; default: - printk("AFFS: Unrecognized mount option \"%s\" " - "or missing value\n", p); + pr_warn("Unrecognized mount option \"%s\" or missing value\n", + p); return 0; } } @@ -339,7 +339,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) if (!parse_options(data,&uid,&gid,&i,&reserved,&root_block, &blocksize,&sbi->s_prefix, sbi->s_volume, &mount_flags)) { - printk(KERN_ERR "AFFS: Error parsing options\n"); + pr_err("Error parsing options\n"); return -EINVAL; } /* N.B. after this point s_prefix must be released */ @@ -407,8 +407,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) } } if (!silent) - printk(KERN_ERR "AFFS: No valid root block on device %s\n", - sb->s_id); + pr_err("No valid root block on device %s\n", sb->s_id); return -EINVAL; /* N.B. after this point bh must be released */ @@ -420,7 +419,7 @@ got_root: /* Find out which kind of FS we have */ boot_bh = sb_bread(sb, 0); if (!boot_bh) { - printk(KERN_ERR "AFFS: Cannot read boot block\n"); + pr_err("Cannot read boot block\n"); return -EINVAL; } memcpy(sig, boot_bh->b_data, 4); @@ -433,8 +432,7 @@ got_root: */ if ((chksum == FS_DCFFS || chksum == MUFS_DCFFS || chksum == FS_DCOFS || chksum == MUFS_DCOFS) && !(sb->s_flags & MS_RDONLY)) { - printk(KERN_NOTICE "AFFS: Dircache FS - mounting %s read only\n", - sb->s_id); + pr_notice("Dircache FS - mounting %s read only\n", sb->s_id); sb->s_flags |= MS_RDONLY; } switch (chksum) { @@ -468,14 +466,14 @@ got_root: sb->s_flags |= MS_NOEXEC; break; default: - printk(KERN_ERR "AFFS: Unknown filesystem on device %s: %08X\n", - sb->s_id, chksum); + pr_err("Unknown filesystem on device %s: %08X\n", + sb->s_id, chksum); return -EINVAL; } if (mount_flags & SF_VERBOSE) { u8 len = AFFS_ROOT_TAIL(sb, root_bh)->disk_name[0]; - printk(KERN_NOTICE "AFFS: Mounting volume \"%.*s\": Type=%.3s\\%c, Blocksize=%d\n", + pr_notice("Mounting volume \"%.*s\": Type=%.3s\\%c, Blocksize=%d\n", len > 31 ? 31 : len, AFFS_ROOT_TAIL(sb, root_bh)->disk_name + 1, sig, sig[3] + '0', blocksize); @@ -506,7 +504,7 @@ got_root: sb->s_root = d_make_root(root_inode); if (!sb->s_root) { - printk(KERN_ERR "AFFS: Get root inode failed\n"); + pr_err("AFFS: Get root inode failed\n"); return -ENOMEM; } -- cgit v1.2.3 From 9606d9aa858aeb70f3b6062bab82eb1e5a91a923 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:37:25 -0700 Subject: fs/affs: pr_debug cleanup - Remove AFFS: prefix (defined in pr_fmt) - Use __func__ - Separate format/arguments on lines > 80 characters. Signed-off-by: Fabian Frederick Cc: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/affs/affs.h | 10 +++++----- fs/affs/amigaffs.c | 9 +++++---- fs/affs/bitmap.c | 8 ++++---- fs/affs/dir.c | 8 ++++---- fs/affs/file.c | 24 ++++++++++++++---------- fs/affs/inode.c | 14 ++++++++------ fs/affs/namei.c | 39 +++++++++++++++++++++++---------------- fs/affs/super.c | 19 ++++++++++--------- fs/affs/symlink.c | 2 +- 9 files changed, 74 insertions(+), 59 deletions(-) diff --git a/fs/affs/affs.h b/fs/affs/affs.h index 347ee6fc5875..9bca88159725 100644 --- a/fs/affs/affs.h +++ b/fs/affs/affs.h @@ -212,7 +212,7 @@ affs_set_blocksize(struct super_block *sb, int size) static inline struct buffer_head * affs_bread(struct super_block *sb, int block) { - pr_debug("affs_bread: %d\n", block); + pr_debug("%s: %d\n", __func__, block); if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size) return sb_bread(sb, block); return NULL; @@ -220,7 +220,7 @@ affs_bread(struct super_block *sb, int block) static inline struct buffer_head * affs_getblk(struct super_block *sb, int block) { - pr_debug("affs_getblk: %d\n", block); + pr_debug("%s: %d\n", __func__, block); if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size) return sb_getblk(sb, block); return NULL; @@ -229,7 +229,7 @@ static inline struct buffer_head * affs_getzeroblk(struct super_block *sb, int block) { struct buffer_head *bh; - pr_debug("affs_getzeroblk: %d\n", block); + pr_debug("%s: %d\n", __func__, block); if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size) { bh = sb_getblk(sb, block); lock_buffer(bh); @@ -244,7 +244,7 @@ static inline struct buffer_head * affs_getemptyblk(struct super_block *sb, int block) { struct buffer_head *bh; - pr_debug("affs_getemptyblk: %d\n", block); + pr_debug("%s: %d\n", __func__, block); if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size) { bh = sb_getblk(sb, block); wait_on_buffer(bh); @@ -257,7 +257,7 @@ static inline void affs_brelse(struct buffer_head *bh) { if (bh) - pr_debug("affs_brelse: %lld\n", (long long) bh->b_blocknr); + pr_debug("%s: %lld\n", __func__, (long long) bh->b_blocknr); brelse(bh); } diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c index fa8ba6a6de4e..406b29836b19 100644 --- a/fs/affs/amigaffs.c +++ b/fs/affs/amigaffs.c @@ -34,7 +34,7 @@ affs_insert_hash(struct inode *dir, struct buffer_head *bh) ino = bh->b_blocknr; offset = affs_hash_name(sb, AFFS_TAIL(sb, bh)->name + 1, AFFS_TAIL(sb, bh)->name[0]); - pr_debug("AFFS: insert_hash(dir=%u, ino=%d)\n", (u32)dir->i_ino, ino); + pr_debug("%s(dir=%u, ino=%d)\n", __func__, (u32)dir->i_ino, ino); dir_bh = affs_bread(sb, dir->i_ino); if (!dir_bh) @@ -84,7 +84,8 @@ affs_remove_hash(struct inode *dir, struct buffer_head *rem_bh) sb = dir->i_sb; rem_ino = rem_bh->b_blocknr; offset = affs_hash_name(sb, AFFS_TAIL(sb, rem_bh)->name+1, AFFS_TAIL(sb, rem_bh)->name[0]); - pr_debug("AFFS: remove_hash(dir=%d, ino=%d, hashval=%d)\n", (u32)dir->i_ino, rem_ino, offset); + pr_debug("%s(dir=%d, ino=%d, hashval=%d)\n", + __func__, (u32)dir->i_ino, rem_ino, offset); bh = affs_bread(sb, dir->i_ino); if (!bh) @@ -147,7 +148,7 @@ affs_remove_link(struct dentry *dentry) u32 link_ino, ino; int retval; - pr_debug("AFFS: remove_link(key=%ld)\n", inode->i_ino); + pr_debug("%s(key=%ld)\n", __func__, inode->i_ino); retval = -EIO; bh = affs_bread(sb, inode->i_ino); if (!bh) @@ -279,7 +280,7 @@ affs_remove_header(struct dentry *dentry) if (!inode) goto done; - pr_debug("AFFS: remove_header(key=%ld)\n", inode->i_ino); + pr_debug("%s(key=%ld)\n", __func__, inode->i_ino); retval = -EIO; bh = affs_bread(sb, (u32)(long)dentry->d_fsdata); if (!bh) diff --git a/fs/affs/bitmap.c b/fs/affs/bitmap.c index d9559f5d2d1b..c8de51185c23 100644 --- a/fs/affs/bitmap.c +++ b/fs/affs/bitmap.c @@ -17,7 +17,7 @@ affs_count_free_blocks(struct super_block *sb) u32 free; int i; - pr_debug("AFFS: count_free_blocks()\n"); + pr_debug("%s()\n", __func__); if (sb->s_flags & MS_RDONLY) return 0; @@ -43,7 +43,7 @@ affs_free_block(struct super_block *sb, u32 block) u32 blk, bmap, bit, mask, tmp; __be32 *data; - pr_debug("AFFS: free_block(%u)\n", block); + pr_debug("%s(%u)\n", __func__, block); if (block > sbi->s_partition_size) goto err_range; @@ -125,7 +125,7 @@ affs_alloc_block(struct inode *inode, u32 goal) sb = inode->i_sb; sbi = AFFS_SB(sb); - pr_debug("AFFS: balloc(inode=%lu,goal=%u): ", inode->i_ino, goal); + pr_debug("balloc(inode=%lu,goal=%u): ", inode->i_ino, goal); if (AFFS_I(inode)->i_pa_cnt) { pr_debug("%d\n", AFFS_I(inode)->i_lastalloc+1); @@ -291,7 +291,7 @@ int affs_init_bitmap(struct super_block *sb, int *flags) *flags |= MS_RDONLY; goto out; } - pr_debug("AFFS: read bitmap block %d: %d\n", blk, bm->bm_key); + pr_debug("read bitmap block %d: %d\n", blk, bm->bm_key); bm->bm_free = memweight(bh->b_data + 4, sb->s_blocksize - 4); /* Don't try read the extension if this is the last block, diff --git a/fs/affs/dir.c b/fs/affs/dir.c index cbbda476a805..59f07bec92a6 100644 --- a/fs/affs/dir.c +++ b/fs/affs/dir.c @@ -54,8 +54,8 @@ affs_readdir(struct file *file, struct dir_context *ctx) u32 ino; int error = 0; - pr_debug("AFFS: readdir(ino=%lu,f_pos=%lx)\n", - inode->i_ino, (unsigned long)ctx->pos); + pr_debug("%s(ino=%lu,f_pos=%lx)\n", + __func__, inode->i_ino, (unsigned long)ctx->pos); if (ctx->pos < 2) { file->private_data = (void *)0; @@ -81,7 +81,7 @@ affs_readdir(struct file *file, struct dir_context *ctx) */ ino = (u32)(long)file->private_data; if (ino && file->f_version == inode->i_version) { - pr_debug("AFFS: readdir() left off=%d\n", ino); + pr_debug("readdir() left off=%d\n", ino); goto inside; } @@ -117,7 +117,7 @@ inside: namelen = min(AFFS_TAIL(sb, fh_bh)->name[0], (u8)30); name = AFFS_TAIL(sb, fh_bh)->name + 1; - pr_debug("AFFS: readdir(): dir_emit(\"%.*s\", " + pr_debug("readdir(): dir_emit(\"%.*s\", " "ino=%u), hash=%d, f_pos=%x\n", namelen, name, ino, hash_pos, (u32)ctx->pos); diff --git a/fs/affs/file.c b/fs/affs/file.c index fd168ef18516..0270303388ee 100644 --- a/fs/affs/file.c +++ b/fs/affs/file.c @@ -45,7 +45,7 @@ const struct inode_operations affs_file_inode_operations = { static int affs_file_open(struct inode *inode, struct file *filp) { - pr_debug("AFFS: open(%lu,%d)\n", + pr_debug("open(%lu,%d)\n", inode->i_ino, atomic_read(&AFFS_I(inode)->i_opencnt)); atomic_inc(&AFFS_I(inode)->i_opencnt); return 0; @@ -54,7 +54,7 @@ affs_file_open(struct inode *inode, struct file *filp) static int affs_file_release(struct inode *inode, struct file *filp) { - pr_debug("AFFS: release(%lu, %d)\n", + pr_debug("release(%lu, %d)\n", inode->i_ino, atomic_read(&AFFS_I(inode)->i_opencnt)); if (atomic_dec_and_test(&AFFS_I(inode)->i_opencnt)) { @@ -324,7 +324,8 @@ affs_get_block(struct inode *inode, sector_t block, struct buffer_head *bh_resul struct buffer_head *ext_bh; u32 ext; - pr_debug("AFFS: get_block(%u, %lu)\n", (u32)inode->i_ino, (unsigned long)block); + pr_debug("%s(%u, %lu)\n", + __func__, (u32)inode->i_ino, (unsigned long)block); BUG_ON(block > (sector_t)0x7fffffffUL); @@ -508,7 +509,7 @@ affs_do_readpage_ofs(struct page *page, unsigned to) u32 bidx, boff, bsize; u32 tmp; - pr_debug("AFFS: read_page(%u, %ld, 0, %d)\n", (u32)inode->i_ino, + pr_debug("%s(%u, %ld, 0, %d)\n", __func__, (u32)inode->i_ino, page->index, to); BUG_ON(to > PAGE_CACHE_SIZE); kmap(page); @@ -544,7 +545,7 @@ affs_extent_file_ofs(struct inode *inode, u32 newsize) u32 size, bsize; u32 tmp; - pr_debug("AFFS: extent_file(%u, %d)\n", (u32)inode->i_ino, newsize); + pr_debug("%s(%u, %d)\n", __func__, (u32)inode->i_ino, newsize); bsize = AFFS_SB(sb)->s_data_blksize; bh = NULL; size = AFFS_I(inode)->mmu_private; @@ -610,7 +611,7 @@ affs_readpage_ofs(struct file *file, struct page *page) u32 to; int err; - pr_debug("AFFS: read_page(%u, %ld)\n", (u32)inode->i_ino, page->index); + pr_debug("%s(%u, %ld)\n", __func__, (u32)inode->i_ino, page->index); to = PAGE_CACHE_SIZE; if (((page->index + 1) << PAGE_CACHE_SHIFT) > inode->i_size) { to = inode->i_size & ~PAGE_CACHE_MASK; @@ -633,7 +634,8 @@ static int affs_write_begin_ofs(struct file *file, struct address_space *mapping pgoff_t index; int err = 0; - pr_debug("AFFS: write_begin(%u, %llu, %llu)\n", (u32)inode->i_ino, (unsigned long long)pos, (unsigned long long)pos + len); + pr_debug("%s(%u, %llu, %llu)\n", __func__, (u32)inode->i_ino, + (unsigned long long)pos, (unsigned long long)pos + len); if (pos > AFFS_I(inode)->mmu_private) { /* XXX: this probably leaves a too-big i_size in case of * failure. Should really be updating i_size at write_end time @@ -682,7 +684,9 @@ static int affs_write_end_ofs(struct file *file, struct address_space *mapping, * due to write_begin. */ - pr_debug("AFFS: write_begin(%u, %llu, %llu)\n", (u32)inode->i_ino, (unsigned long long)pos, (unsigned long long)pos + len); + pr_debug("%s(%u, %llu, %llu)\n", + __func__, (u32)inode->i_ino, (unsigned long long)pos, + (unsigned long long)pos + len); bsize = AFFS_SB(sb)->s_data_blksize; data = page_address(page); @@ -804,7 +808,7 @@ affs_free_prealloc(struct inode *inode) { struct super_block *sb = inode->i_sb; - pr_debug("AFFS: free_prealloc(ino=%lu)\n", inode->i_ino); + pr_debug("free_prealloc(ino=%lu)\n", inode->i_ino); while (AFFS_I(inode)->i_pa_cnt) { AFFS_I(inode)->i_pa_cnt--; @@ -824,7 +828,7 @@ affs_truncate(struct inode *inode) struct buffer_head *ext_bh; int i; - pr_debug("AFFS: truncate(inode=%d, oldsize=%u, newsize=%u)\n", + pr_debug("truncate(inode=%d, oldsize=%u, newsize=%u)\n", (u32)inode->i_ino, (u32)AFFS_I(inode)->mmu_private, (u32)inode->i_size); last_blk = 0; diff --git a/fs/affs/inode.c b/fs/affs/inode.c index 96df91e8c334..bec2d1a0c91c 100644 --- a/fs/affs/inode.c +++ b/fs/affs/inode.c @@ -34,7 +34,7 @@ struct inode *affs_iget(struct super_block *sb, unsigned long ino) if (!(inode->i_state & I_NEW)) return inode; - pr_debug("AFFS: affs_iget(%lu)\n", inode->i_ino); + pr_debug("affs_iget(%lu)\n", inode->i_ino); block = inode->i_ino; bh = affs_bread(sb, block); @@ -175,7 +175,7 @@ affs_write_inode(struct inode *inode, struct writeback_control *wbc) uid_t uid; gid_t gid; - pr_debug("AFFS: write_inode(%lu)\n",inode->i_ino); + pr_debug("write_inode(%lu)\n", inode->i_ino); if (!inode->i_nlink) // possibly free block @@ -220,7 +220,7 @@ affs_notify_change(struct dentry *dentry, struct iattr *attr) struct inode *inode = dentry->d_inode; int error; - pr_debug("AFFS: notify_change(%lu,0x%x)\n",inode->i_ino,attr->ia_valid); + pr_debug("notify_change(%lu,0x%x)\n", inode->i_ino, attr->ia_valid); error = inode_change_ok(inode,attr); if (error) @@ -258,7 +258,8 @@ void affs_evict_inode(struct inode *inode) { unsigned long cache_page; - pr_debug("AFFS: evict_inode(ino=%lu, nlink=%u)\n", inode->i_ino, inode->i_nlink); + pr_debug("evict_inode(ino=%lu, nlink=%u)\n", + inode->i_ino, inode->i_nlink); truncate_inode_pages_final(&inode->i_data); if (!inode->i_nlink) { @@ -271,7 +272,7 @@ affs_evict_inode(struct inode *inode) affs_free_prealloc(inode); cache_page = (unsigned long)AFFS_I(inode)->i_lc; if (cache_page) { - pr_debug("AFFS: freeing ext cache\n"); + pr_debug("freeing ext cache\n"); AFFS_I(inode)->i_lc = NULL; AFFS_I(inode)->i_ac = NULL; free_page(cache_page); @@ -350,7 +351,8 @@ affs_add_entry(struct inode *dir, struct inode *inode, struct dentry *dentry, s3 u32 block = 0; int retval; - pr_debug("AFFS: add_entry(dir=%u, inode=%u, \"%*s\", type=%d)\n", (u32)dir->i_ino, + pr_debug("%s(dir=%u, inode=%u, \"%*s\", type=%d)\n", + __func__, (u32)dir->i_ino, (u32)inode->i_ino, (int)dentry->d_name.len, dentry->d_name.name, type); retval = -EIO; diff --git a/fs/affs/namei.c b/fs/affs/namei.c index 6dae1ccd176d..035bd31556fc 100644 --- a/fs/affs/namei.c +++ b/fs/affs/namei.c @@ -190,7 +190,8 @@ affs_find_entry(struct inode *dir, struct dentry *dentry) toupper_t toupper = affs_get_toupper(sb); u32 key; - pr_debug("AFFS: find_entry(\"%.*s\")\n", (int)dentry->d_name.len, dentry->d_name.name); + pr_debug("%s(\"%.*s\")\n", + __func__, (int)dentry->d_name.len, dentry->d_name.name); bh = affs_bread(sb, dir->i_ino); if (!bh) @@ -218,7 +219,8 @@ affs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) struct buffer_head *bh; struct inode *inode = NULL; - pr_debug("AFFS: lookup(\"%.*s\")\n",(int)dentry->d_name.len,dentry->d_name.name); + pr_debug("%s(\"%.*s\")\n", + __func__, (int)dentry->d_name.len, dentry->d_name.name); affs_lock_dir(dir); bh = affs_find_entry(dir, dentry); @@ -248,9 +250,9 @@ affs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) int affs_unlink(struct inode *dir, struct dentry *dentry) { - pr_debug("AFFS: unlink(dir=%d, %lu \"%.*s\")\n", (u32)dir->i_ino, - dentry->d_inode->i_ino, - (int)dentry->d_name.len, dentry->d_name.name); + pr_debug("%s(dir=%d, %lu \"%.*s\")\n", + __func__, (u32)dir->i_ino, dentry->d_inode->i_ino, + (int)dentry->d_name.len, dentry->d_name.name); return affs_remove_header(dentry); } @@ -262,7 +264,8 @@ affs_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool excl) struct inode *inode; int error; - pr_debug("AFFS: create(%lu,\"%.*s\",0%ho)\n",dir->i_ino,(int)dentry->d_name.len, + pr_debug("%s(%lu,\"%.*s\",0%ho)\n", + __func__, dir->i_ino, (int)dentry->d_name.len, dentry->d_name.name,mode); inode = affs_new_inode(dir); @@ -291,8 +294,9 @@ affs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) struct inode *inode; int error; - pr_debug("AFFS: mkdir(%lu,\"%.*s\",0%ho)\n",dir->i_ino, - (int)dentry->d_name.len,dentry->d_name.name,mode); + pr_debug("%s(%lu,\"%.*s\",0%ho)\n", + __func__, dir->i_ino, (int)dentry->d_name.len, + dentry->d_name.name, mode); inode = affs_new_inode(dir); if (!inode) @@ -317,8 +321,8 @@ affs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) int affs_rmdir(struct inode *dir, struct dentry *dentry) { - pr_debug("AFFS: rmdir(dir=%u, %lu \"%.*s\")\n", (u32)dir->i_ino, - dentry->d_inode->i_ino, + pr_debug("%s(dir=%u, %lu \"%.*s\")\n", + __func__, (u32)dir->i_ino, dentry->d_inode->i_ino, (int)dentry->d_name.len, dentry->d_name.name); return affs_remove_header(dentry); @@ -334,8 +338,9 @@ affs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) int i, maxlen, error; char c, lc; - pr_debug("AFFS: symlink(%lu,\"%.*s\" -> \"%s\")\n",dir->i_ino, - (int)dentry->d_name.len,dentry->d_name.name,symname); + pr_debug("%s(%lu,\"%.*s\" -> \"%s\")\n", + __func__, dir->i_ino, (int)dentry->d_name.len, + dentry->d_name.name, symname); maxlen = AFFS_SB(sb)->s_hashsize * sizeof(u32) - 1; inode = affs_new_inode(dir); @@ -404,7 +409,8 @@ affs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry) { struct inode *inode = old_dentry->d_inode; - pr_debug("AFFS: link(%u, %u, \"%.*s\")\n", (u32)inode->i_ino, (u32)dir->i_ino, + pr_debug("%s(%u, %u, \"%.*s\")\n", + __func__, (u32)inode->i_ino, (u32)dir->i_ino, (int)dentry->d_name.len,dentry->d_name.name); return affs_add_entry(dir, inode, dentry, ST_LINKFILE); @@ -418,9 +424,10 @@ affs_rename(struct inode *old_dir, struct dentry *old_dentry, struct buffer_head *bh = NULL; int retval; - pr_debug("AFFS: rename(old=%u,\"%*s\" to new=%u,\"%*s\")\n", - (u32)old_dir->i_ino, (int)old_dentry->d_name.len, old_dentry->d_name.name, - (u32)new_dir->i_ino, (int)new_dentry->d_name.len, new_dentry->d_name.name); + pr_debug("%s(old=%u,\"%*s\" to new=%u,\"%*s\")\n", + __func__, (u32)old_dir->i_ino, (int)old_dentry->d_name.len, + old_dentry->d_name.name, (u32)new_dir->i_ino, + (int)new_dentry->d_name.len, new_dentry->d_name.name); retval = affs_check_name(new_dentry->d_name.name, new_dentry->d_name.len, diff --git a/fs/affs/super.c b/fs/affs/super.c index 507791263ec8..51f1a95bff73 100644 --- a/fs/affs/super.c +++ b/fs/affs/super.c @@ -46,7 +46,7 @@ static void affs_put_super(struct super_block *sb) { struct affs_sb_info *sbi = AFFS_SB(sb); - pr_debug("AFFS: put_super()\n"); + pr_debug("%s()\n", __func__); cancel_delayed_work_sync(&sbi->sb_work); } @@ -319,7 +319,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) save_mount_options(sb, data); - pr_debug("AFFS: read_super(%s)\n",data ? (const char *)data : "no options"); + pr_debug("read_super(%s)\n", data ? (const char *)data : "no options"); sb->s_magic = AFFS_SUPER_MAGIC; sb->s_op = &affs_sops; @@ -356,7 +356,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) */ size = sb->s_bdev->bd_inode->i_size >> 9; - pr_debug("AFFS: initial blocksize=%d, #blocks=%d\n", 512, size); + pr_debug("initial blocksize=%d, #blocks=%d\n", 512, size); affs_set_blocksize(sb, PAGE_SIZE); /* Try to find root block. Its location depends on the block size. */ @@ -371,7 +371,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) sbi->s_root_block = root_block; if (root_block < 0) sbi->s_root_block = (reserved + size - 1) / 2; - pr_debug("AFFS: setting blocksize to %d\n", blocksize); + pr_debug("setting blocksize to %d\n", blocksize); affs_set_blocksize(sb, blocksize); sbi->s_partition_size = size; @@ -386,7 +386,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) * block behind the calculated one. So we check this one, too. */ for (num_bm = 0; num_bm < 2; num_bm++) { - pr_debug("AFFS: Dev %s, trying root=%u, bs=%d, " + pr_debug("Dev %s, trying root=%u, bs=%d, " "size=%d, reserved=%d\n", sb->s_id, sbi->s_root_block + num_bm, @@ -508,7 +508,7 @@ got_root: return -ENOMEM; } - pr_debug("AFFS: s_flags=%lX\n",sb->s_flags); + pr_debug("s_flags=%lX\n", sb->s_flags); return 0; } @@ -528,7 +528,7 @@ affs_remount(struct super_block *sb, int *flags, char *data) char volume[32]; char *prefix = NULL; - pr_debug("AFFS: remount(flags=0x%x,opts=\"%s\")\n",*flags,data); + pr_debug("%s(flags=0x%x,opts=\"%s\")\n", __func__, *flags, data); sync_filesystem(sb); *flags |= MS_NODIRATIME; @@ -576,8 +576,9 @@ affs_statfs(struct dentry *dentry, struct kstatfs *buf) int free; u64 id = huge_encode_dev(sb->s_bdev->bd_dev); - pr_debug("AFFS: statfs() partsize=%d, reserved=%d\n",AFFS_SB(sb)->s_partition_size, - AFFS_SB(sb)->s_reserved); + pr_debug("%s() partsize=%d, reserved=%d\n", + __func__, AFFS_SB(sb)->s_partition_size, + AFFS_SB(sb)->s_reserved); free = affs_count_free_blocks(sb); buf->f_type = AFFS_SUPER_MAGIC; diff --git a/fs/affs/symlink.c b/fs/affs/symlink.c index ee00f08c4f53..f39b71c3981e 100644 --- a/fs/affs/symlink.c +++ b/fs/affs/symlink.c @@ -21,7 +21,7 @@ static int affs_symlink_readpage(struct file *file, struct page *page) char c; char lc; - pr_debug("AFFS: follow_link(ino=%lu)\n",inode->i_ino); + pr_debug("follow_link(ino=%lu)\n", inode->i_ino); err = -EIO; bh = affs_bread(inode->i_sb, inode->i_ino); -- cgit v1.2.3 From aba871f1e9a8dad07d442913998cd679529f2784 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:37:29 -0700 Subject: kernel/profile.c: convert printk to pr_foo() Signed-off-by: Fabian Frederick Cc: Paul Gortmaker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/profile.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/kernel/profile.c b/kernel/profile.c index cb980f0c731b..c1204e2af5b2 100644 --- a/kernel/profile.c +++ b/kernel/profile.c @@ -64,12 +64,10 @@ int profile_setup(char *str) str += strlen(sleepstr) + 1; if (get_option(&str, &par)) prof_shift = par; - printk(KERN_INFO - "kernel sleep profiling enabled (shift: %ld)\n", + pr_info("kernel sleep profiling enabled (shift: %ld)\n", prof_shift); #else - printk(KERN_WARNING - "kernel sleep profiling requires CONFIG_SCHEDSTATS\n"); + pr_warn("kernel sleep profiling requires CONFIG_SCHEDSTATS\n"); #endif /* CONFIG_SCHEDSTATS */ } else if (!strncmp(str, schedstr, strlen(schedstr))) { prof_on = SCHED_PROFILING; @@ -77,8 +75,7 @@ int profile_setup(char *str) str += strlen(schedstr) + 1; if (get_option(&str, &par)) prof_shift = par; - printk(KERN_INFO - "kernel schedule profiling enabled (shift: %ld)\n", + pr_info("kernel schedule profiling enabled (shift: %ld)\n", prof_shift); } else if (!strncmp(str, kvmstr, strlen(kvmstr))) { prof_on = KVM_PROFILING; @@ -86,13 +83,12 @@ int profile_setup(char *str) str += strlen(kvmstr) + 1; if (get_option(&str, &par)) prof_shift = par; - printk(KERN_INFO - "kernel KVM profiling enabled (shift: %ld)\n", + pr_info("kernel KVM profiling enabled (shift: %ld)\n", prof_shift); } else if (get_option(&str, &par)) { prof_shift = par; prof_on = CPU_PROFILING; - printk(KERN_INFO "kernel profiling enabled (shift: %ld)\n", + pr_info("kernel profiling enabled (shift: %ld)\n", prof_shift); } return 1; -- cgit v1.2.3 From f3da64d1ea12ed6cfe18e6dedbc9739743e0b884 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:37:30 -0700 Subject: kernel/profile.c: use static const char instead of static char schedstr, sleepstr and kvmstr are only used in strcmp & strlen Signed-off-by: Fabian Frederick Cc: Paul Gortmaker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/profile.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/kernel/profile.c b/kernel/profile.c index c1204e2af5b2..54bf5ba26420 100644 --- a/kernel/profile.c +++ b/kernel/profile.c @@ -52,9 +52,9 @@ static DEFINE_MUTEX(profile_flip_mutex); int profile_setup(char *str) { - static char schedstr[] = "schedule"; - static char sleepstr[] = "sleep"; - static char kvmstr[] = "kvm"; + static const char schedstr[] = "schedule"; + static const char sleepstr[] = "sleep"; + static const char kvmstr[] = "kvm"; int par; if (!strncmp(str, sleepstr, strlen(sleepstr))) { -- cgit v1.2.3 From ef74885353e0ee4d884604148628df3369c76719 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:37:31 -0700 Subject: fs/pstore: logging clean-up - Define pr_fmt in plateform.c and ram_core.c for global prefix. - Coalesce format fragments. - Separate format/arguments on lines > 80 characters. Note: Some pr_foo() were initially declared without prefix and therefore this could break existing log analyzer. [akpm@linux-foundation.org: missed a couple of prefix removals] Signed-off-by: Fabian Frederick Cc: Joe Perches Cc: Anton Vorontsov Cc: Colin Cross Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/pstore/platform.c | 19 +++++++++---------- fs/pstore/ram_core.c | 36 +++++++++++++++++------------------- 2 files changed, 26 insertions(+), 29 deletions(-) diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 46d269e38706..0a9b72cdfeca 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -18,6 +18,8 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#define pr_fmt(fmt) "pstore: " fmt + #include #include #include @@ -224,14 +226,12 @@ static void allocate_buf_for_compression(void) zlib_inflate_workspacesize()); stream.workspace = kmalloc(size, GFP_KERNEL); if (!stream.workspace) { - pr_err("pstore: No memory for compression workspace; " - "skipping compression\n"); + pr_err("No memory for compression workspace; skipping compression\n"); kfree(big_oops_buf); big_oops_buf = NULL; } } else { - pr_err("No memory for uncompressed data; " - "skipping compression\n"); + pr_err("No memory for uncompressed data; skipping compression\n"); stream.workspace = NULL; } @@ -455,8 +455,7 @@ int pstore_register(struct pstore_info *psi) add_timer(&pstore_timer); } - pr_info("pstore: Registered %s as persistent store backend\n", - psi->name); + pr_info("Registered %s as persistent store backend\n", psi->name); return 0; } @@ -502,8 +501,8 @@ void pstore_get_records(int quiet) size = unzipped_len; compressed = false; } else { - pr_err("pstore: decompression failed;" - "returned %d\n", unzipped_len); + pr_err("decompression failed;returned %d\n", + unzipped_len); compressed = true; } } @@ -524,8 +523,8 @@ out: mutex_unlock(&psi->read_mutex); if (failed) - printk(KERN_WARNING "pstore: failed to load %d record(s) from '%s'\n", - failed, psi->name); + pr_warn("failed to load %d record(s) from '%s'\n", + failed, psi->name); } static void pstore_dowork(struct work_struct *work) diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c index ff7e3d4df5a1..34a1e5aa848c 100644 --- a/fs/pstore/ram_core.c +++ b/fs/pstore/ram_core.c @@ -12,6 +12,8 @@ * */ +#define pr_fmt(fmt) "persistent_ram: " fmt + #include #include #include @@ -205,12 +207,10 @@ static void persistent_ram_ecc_old(struct persistent_ram_zone *prz) size = buffer->data + prz->buffer_size - block; numerr = persistent_ram_decode_rs8(prz, block, size, par); if (numerr > 0) { - pr_devel("persistent_ram: error in block %p, %d\n", - block, numerr); + pr_devel("error in block %p, %d\n", block, numerr); prz->corrected_bytes += numerr; } else if (numerr < 0) { - pr_devel("persistent_ram: uncorrectable error in block %p\n", - block); + pr_devel("uncorrectable error in block %p\n", block); prz->bad_blocks++; } block += prz->ecc_info.block_size; @@ -257,7 +257,7 @@ static int persistent_ram_init_ecc(struct persistent_ram_zone *prz, prz->rs_decoder = init_rs(prz->ecc_info.symsize, prz->ecc_info.poly, 0, 1, prz->ecc_info.ecc_size); if (prz->rs_decoder == NULL) { - pr_info("persistent_ram: init_rs failed\n"); + pr_info("init_rs failed\n"); return -EINVAL; } @@ -267,10 +267,10 @@ static int persistent_ram_init_ecc(struct persistent_ram_zone *prz, numerr = persistent_ram_decode_rs8(prz, buffer, sizeof(*buffer), prz->par_header); if (numerr > 0) { - pr_info("persistent_ram: error in header, %d\n", numerr); + pr_info("error in header, %d\n", numerr); prz->corrected_bytes += numerr; } else if (numerr < 0) { - pr_info("persistent_ram: uncorrectable error in header\n"); + pr_info("uncorrectable error in header\n"); prz->bad_blocks++; } @@ -317,7 +317,7 @@ void persistent_ram_save_old(struct persistent_ram_zone *prz) prz->old_log = kmalloc(size, GFP_KERNEL); } if (!prz->old_log) { - pr_err("persistent_ram: failed to allocate buffer\n"); + pr_err("failed to allocate buffer\n"); return; } @@ -396,8 +396,8 @@ static void *persistent_ram_vmap(phys_addr_t start, size_t size) pages = kmalloc(sizeof(struct page *) * page_count, GFP_KERNEL); if (!pages) { - pr_err("%s: Failed to allocate array for %u pages\n", __func__, - page_count); + pr_err("%s: Failed to allocate array for %u pages\n", + __func__, page_count); return NULL; } @@ -462,19 +462,17 @@ static int persistent_ram_post_init(struct persistent_ram_zone *prz, u32 sig, if (prz->buffer->sig == sig) { if (buffer_size(prz) > prz->buffer_size || buffer_start(prz) > buffer_size(prz)) - pr_info("persistent_ram: found existing invalid buffer," - " size %zu, start %zu\n", - buffer_size(prz), buffer_start(prz)); + pr_info("found existing invalid buffer, size %zu, start %zu\n", + buffer_size(prz), buffer_start(prz)); else { - pr_debug("persistent_ram: found existing buffer," - " size %zu, start %zu\n", - buffer_size(prz), buffer_start(prz)); + pr_debug("found existing buffer, size %zu, start %zu\n", + buffer_size(prz), buffer_start(prz)); persistent_ram_save_old(prz); return 0; } } else { - pr_debug("persistent_ram: no valid data in buffer" - " (sig = 0x%08x)\n", prz->buffer->sig); + pr_debug("no valid data in buffer (sig = 0x%08x)\n", + prz->buffer->sig); } prz->buffer->sig = sig; @@ -509,7 +507,7 @@ struct persistent_ram_zone *persistent_ram_new(phys_addr_t start, size_t size, prz = kzalloc(sizeof(struct persistent_ram_zone), GFP_KERNEL); if (!prz) { - pr_err("persistent_ram: failed to allocate persistent ram zone\n"); + pr_err("failed to allocate persistent ram zone\n"); goto err; } -- cgit v1.2.3 From 4e1eb88305135248ad0e927449e457df95d8d9b3 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:37:32 -0700 Subject: FS/CACHEFILES: convert printk to pr_foo() Signed-off-by: Fabian Frederick Cc: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/cachefiles/bind.c | 10 ++++------ fs/cachefiles/interface.c | 3 +-- fs/cachefiles/internal.h | 22 +++++++++++----------- fs/cachefiles/main.c | 7 +++---- fs/cachefiles/namei.c | 39 +++++++++++++++++---------------------- fs/cachefiles/security.c | 10 +++------- 6 files changed, 39 insertions(+), 52 deletions(-) diff --git a/fs/cachefiles/bind.c b/fs/cachefiles/bind.c index 5b99bafc31d1..c7f3dd2b79dd 100644 --- a/fs/cachefiles/bind.c +++ b/fs/cachefiles/bind.c @@ -228,9 +228,8 @@ static int cachefiles_daemon_add_cache(struct cachefiles_cache *cache) set_bit(CACHEFILES_READY, &cache->flags); dput(root); - printk(KERN_INFO "CacheFiles:" - " File cache on %s registered\n", - cache->cache.identifier); + pr_info("CacheFiles: File cache on %s registered\n", + cache->cache.identifier); /* check how much space the cache has */ cachefiles_has_space(cache, 0, 0); @@ -262,9 +261,8 @@ void cachefiles_daemon_unbind(struct cachefiles_cache *cache) _enter(""); if (test_bit(CACHEFILES_READY, &cache->flags)) { - printk(KERN_INFO "CacheFiles:" - " File cache on %s unregistering\n", - cache->cache.identifier); + pr_info("CacheFiles: File cache on %s unregistering\n", + cache->cache.identifier); fscache_withdraw_cache(&cache->cache); } diff --git a/fs/cachefiles/interface.c b/fs/cachefiles/interface.c index 57e17fe6121a..e47a8d87852f 100644 --- a/fs/cachefiles/interface.c +++ b/fs/cachefiles/interface.c @@ -146,8 +146,7 @@ static int cachefiles_lookup_object(struct fscache_object *_object) if (ret < 0 && ret != -ETIMEDOUT) { if (ret != -ENOBUFS) - printk(KERN_WARNING - "CacheFiles: Lookup failed error %d\n", ret); + pr_warn("CacheFiles: Lookup failed error %d\n", ret); fscache_object_lookup_error(&object->fscache); } diff --git a/fs/cachefiles/internal.h b/fs/cachefiles/internal.h index 5349473df1b1..5c7ec647e44c 100644 --- a/fs/cachefiles/internal.h +++ b/fs/cachefiles/internal.h @@ -245,7 +245,7 @@ extern int cachefiles_remove_object_xattr(struct cachefiles_cache *cache, /* * error handling */ -#define kerror(FMT, ...) printk(KERN_ERR "CacheFiles: "FMT"\n", ##__VA_ARGS__) +#define kerror(FMT, ...) pr_err("CacheFiles: "FMT"\n", ##__VA_ARGS__) #define cachefiles_io_error(___cache, FMT, ...) \ do { \ @@ -310,8 +310,8 @@ do { \ #define ASSERT(X) \ do { \ if (unlikely(!(X))) { \ - printk(KERN_ERR "\n"); \ - printk(KERN_ERR "CacheFiles: Assertion failed\n"); \ + pr_err("\n"); \ + pr_err("CacheFiles: Assertion failed\n"); \ BUG(); \ } \ } while (0) @@ -319,9 +319,9 @@ do { \ #define ASSERTCMP(X, OP, Y) \ do { \ if (unlikely(!((X) OP (Y)))) { \ - printk(KERN_ERR "\n"); \ - printk(KERN_ERR "CacheFiles: Assertion failed\n"); \ - printk(KERN_ERR "%lx " #OP " %lx is false\n", \ + pr_err("\n"); \ + pr_err("CacheFiles: Assertion failed\n"); \ + pr_err("%lx " #OP " %lx is false\n", \ (unsigned long)(X), (unsigned long)(Y)); \ BUG(); \ } \ @@ -330,8 +330,8 @@ do { \ #define ASSERTIF(C, X) \ do { \ if (unlikely((C) && !(X))) { \ - printk(KERN_ERR "\n"); \ - printk(KERN_ERR "CacheFiles: Assertion failed\n"); \ + pr_err("\n"); \ + pr_err("CacheFiles: Assertion failed\n"); \ BUG(); \ } \ } while (0) @@ -339,9 +339,9 @@ do { \ #define ASSERTIFCMP(C, X, OP, Y) \ do { \ if (unlikely((C) && !((X) OP (Y)))) { \ - printk(KERN_ERR "\n"); \ - printk(KERN_ERR "CacheFiles: Assertion failed\n"); \ - printk(KERN_ERR "%lx " #OP " %lx is false\n", \ + pr_err("\n"); \ + pr_err("CacheFiles: Assertion failed\n"); \ + pr_err("%lx " #OP " %lx is false\n", \ (unsigned long)(X), (unsigned long)(Y)); \ BUG(); \ } \ diff --git a/fs/cachefiles/main.c b/fs/cachefiles/main.c index 4bfa8cf43bf5..d45c59c147ce 100644 --- a/fs/cachefiles/main.c +++ b/fs/cachefiles/main.c @@ -68,8 +68,7 @@ static int __init cachefiles_init(void) SLAB_HWCACHE_ALIGN, cachefiles_object_init_once); if (!cachefiles_object_jar) { - printk(KERN_NOTICE - "CacheFiles: Failed to allocate an object jar\n"); + pr_notice("CacheFiles: Failed to allocate an object jar\n"); goto error_object_jar; } @@ -77,7 +76,7 @@ static int __init cachefiles_init(void) if (ret < 0) goto error_proc; - printk(KERN_INFO "CacheFiles: Loaded\n"); + pr_info("CacheFiles: Loaded\n"); return 0; error_proc: @@ -96,7 +95,7 @@ fs_initcall(cachefiles_init); */ static void __exit cachefiles_exit(void) { - printk(KERN_INFO "CacheFiles: Unloading\n"); + pr_info("CacheFiles: Unloading\n"); cachefiles_proc_cleanup(); kmem_cache_destroy(cachefiles_object_jar); diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index c0a681705104..18e0d8ee3542 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -35,22 +35,21 @@ void __cachefiles_printk_object(struct cachefiles_object *object, struct fscache_cookie *cookie; unsigned keylen, loop; - printk(KERN_ERR "%sobject: OBJ%x\n", - prefix, object->fscache.debug_id); - printk(KERN_ERR "%sobjstate=%s fl=%lx wbusy=%x ev=%lx[%lx]\n", + pr_err("%sobject: OBJ%x\n", prefix, object->fscache.debug_id); + pr_err("%sobjstate=%s fl=%lx wbusy=%x ev=%lx[%lx]\n", prefix, object->fscache.state->name, object->fscache.flags, work_busy(&object->fscache.work), object->fscache.events, object->fscache.event_mask); - printk(KERN_ERR "%sops=%u inp=%u exc=%u\n", + pr_err("%sops=%u inp=%u exc=%u\n", prefix, object->fscache.n_ops, object->fscache.n_in_progress, object->fscache.n_exclusive); - printk(KERN_ERR "%sparent=%p\n", + pr_err("%sparent=%p\n", prefix, object->fscache.parent); spin_lock(&object->fscache.lock); cookie = object->fscache.cookie; if (cookie) { - printk(KERN_ERR "%scookie=%p [pr=%p nd=%p fl=%lx]\n", + pr_err("%scookie=%p [pr=%p nd=%p fl=%lx]\n", prefix, object->fscache.cookie, object->fscache.cookie->parent, @@ -62,16 +61,16 @@ void __cachefiles_printk_object(struct cachefiles_object *object, else keylen = 0; } else { - printk(KERN_ERR "%scookie=NULL\n", prefix); + pr_err("%scookie=NULL\n", prefix); keylen = 0; } spin_unlock(&object->fscache.lock); if (keylen) { - printk(KERN_ERR "%skey=[%u] '", prefix, keylen); + pr_err("%skey=[%u] '", prefix, keylen); for (loop = 0; loop < keylen; loop++) - printk("%02x", keybuf[loop]); - printk("'\n"); + pr_cont("%02x", keybuf[loop]); + pr_cont("'\n"); } } @@ -131,13 +130,11 @@ found_dentry: dentry); if (fscache_object_is_live(&object->fscache)) { - printk(KERN_ERR "\n"); - printk(KERN_ERR "CacheFiles: Error:" - " Can't preemptively bury live object\n"); + pr_err("\n"); + pr_err("CacheFiles: Error: Can't preemptively bury live object\n"); cachefiles_printk_object(object, NULL); } else if (test_and_set_bit(CACHEFILES_OBJECT_BURIED, &object->flags)) { - printk(KERN_ERR "CacheFiles: Error:" - " Object already preemptively buried\n"); + pr_err("CacheFiles: Error: Object already preemptively buried\n"); } write_unlock(&cache->active_lock); @@ -160,7 +157,7 @@ try_again: write_lock(&cache->active_lock); if (test_and_set_bit(CACHEFILES_OBJECT_ACTIVE, &object->flags)) { - printk(KERN_ERR "CacheFiles: Error: Object already active\n"); + pr_err("CacheFiles: Error: Object already active\n"); cachefiles_printk_object(object, NULL); BUG(); } @@ -193,9 +190,8 @@ try_again: * need to wait for it to be destroyed */ wait_for_old_object: if (fscache_object_is_live(&object->fscache)) { - printk(KERN_ERR "\n"); - printk(KERN_ERR "CacheFiles: Error:" - " Unexpected object collision\n"); + pr_err("\n"); + pr_err("CacheFiles: Error: Unexpected object collision\n"); cachefiles_printk_object(object, xobject); BUG(); } @@ -241,9 +237,8 @@ wait_for_old_object: } if (timeout <= 0) { - printk(KERN_ERR "\n"); - printk(KERN_ERR "CacheFiles: Error: Overlong" - " wait for old active object to go away\n"); + pr_err("\n"); + pr_err("CacheFiles: Error: Overlong wait for old active object to go away\n"); cachefiles_printk_object(object, xobject); goto requeue; } diff --git a/fs/cachefiles/security.c b/fs/cachefiles/security.c index 039b5011d83b..7a6b665f6b1a 100644 --- a/fs/cachefiles/security.c +++ b/fs/cachefiles/security.c @@ -34,9 +34,7 @@ int cachefiles_get_security_ID(struct cachefiles_cache *cache) ret = set_security_override_from_ctx(new, cache->secctx); if (ret < 0) { put_cred(new); - printk(KERN_ERR "CacheFiles:" - " Security denies permission to nominate" - " security context: error %d\n", + pr_err("CacheFiles: Security denies permission to nominate security context: error %d\n", ret); goto error; } @@ -59,16 +57,14 @@ static int cachefiles_check_cache_dir(struct cachefiles_cache *cache, ret = security_inode_mkdir(root->d_inode, root, 0); if (ret < 0) { - printk(KERN_ERR "CacheFiles:" - " Security denies permission to make dirs: error %d", + pr_err("CacheFiles: Security denies permission to make dirs: error %d", ret); return ret; } ret = security_inode_create(root->d_inode, root, 0); if (ret < 0) - printk(KERN_ERR "CacheFiles:" - " Security denies permission to create files: error %d", + pr_err("CacheFiles: Security denies permission to create files: error %d", ret); return ret; -- cgit v1.2.3 From 0227d6abb378454e10d385da6a0f8b79a5b02c27 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:37:33 -0700 Subject: fs/cachefiles: replace kerror by pr_err Also add pr_fmt in internal.h Signed-off-by: Fabian Frederick Cc: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/cachefiles/bind.c | 13 ++++++------- fs/cachefiles/daemon.c | 31 +++++++++++++++---------------- fs/cachefiles/interface.c | 2 +- fs/cachefiles/internal.h | 18 ++++++++++++------ fs/cachefiles/main.c | 8 ++++---- fs/cachefiles/namei.c | 24 ++++++++++++------------ fs/cachefiles/security.c | 6 +++--- fs/cachefiles/xattr.c | 10 +++++----- 8 files changed, 58 insertions(+), 54 deletions(-) diff --git a/fs/cachefiles/bind.c b/fs/cachefiles/bind.c index c7f3dd2b79dd..d749731dc0ee 100644 --- a/fs/cachefiles/bind.c +++ b/fs/cachefiles/bind.c @@ -50,18 +50,18 @@ int cachefiles_daemon_bind(struct cachefiles_cache *cache, char *args) cache->brun_percent < 100); if (*args) { - kerror("'bind' command doesn't take an argument"); + pr_err("'bind' command doesn't take an argument"); return -EINVAL; } if (!cache->rootdirname) { - kerror("No cache directory specified"); + pr_err("No cache directory specified"); return -EINVAL; } /* don't permit already bound caches to be re-bound */ if (test_bit(CACHEFILES_READY, &cache->flags)) { - kerror("Cache already bound"); + pr_err("Cache already bound"); return -EBUSY; } @@ -228,8 +228,7 @@ static int cachefiles_daemon_add_cache(struct cachefiles_cache *cache) set_bit(CACHEFILES_READY, &cache->flags); dput(root); - pr_info("CacheFiles: File cache on %s registered\n", - cache->cache.identifier); + pr_info("File cache on %s registered\n", cache->cache.identifier); /* check how much space the cache has */ cachefiles_has_space(cache, 0, 0); @@ -249,7 +248,7 @@ error_open_root: kmem_cache_free(cachefiles_object_jar, fsdef); error_root_object: cachefiles_end_secure(cache, saved_cred); - kerror("Failed to register: %d", ret); + pr_err("Failed to register: %d", ret); return ret; } @@ -261,7 +260,7 @@ void cachefiles_daemon_unbind(struct cachefiles_cache *cache) _enter(""); if (test_bit(CACHEFILES_READY, &cache->flags)) { - pr_info("CacheFiles: File cache on %s unregistering\n", + pr_info("File cache on %s unregistering\n", cache->cache.identifier); fscache_withdraw_cache(&cache->cache); diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c index 0a1467b15516..b078d3081d6c 100644 --- a/fs/cachefiles/daemon.c +++ b/fs/cachefiles/daemon.c @@ -315,8 +315,7 @@ static unsigned int cachefiles_daemon_poll(struct file *file, static int cachefiles_daemon_range_error(struct cachefiles_cache *cache, char *args) { - kerror("Free space limits must be in range" - " 0%%<=stoprootdirname) { - kerror("Second cache directory specified"); + pr_err("Second cache directory specified"); return -EEXIST; } @@ -504,12 +503,12 @@ static int cachefiles_daemon_secctx(struct cachefiles_cache *cache, char *args) _enter(",%s", args); if (!*args) { - kerror("Empty security context specified"); + pr_err("Empty security context specified"); return -EINVAL; } if (cache->secctx) { - kerror("Second security context specified"); + pr_err("Second security context specified"); return -EINVAL; } @@ -532,7 +531,7 @@ static int cachefiles_daemon_tag(struct cachefiles_cache *cache, char *args) _enter(",%s", args); if (!*args) { - kerror("Empty tag specified"); + pr_err("Empty tag specified"); return -EINVAL; } @@ -563,12 +562,12 @@ static int cachefiles_daemon_cull(struct cachefiles_cache *cache, char *args) goto inval; if (!test_bit(CACHEFILES_READY, &cache->flags)) { - kerror("cull applied to unready cache"); + pr_err("cull applied to unready cache"); return -EIO; } if (test_bit(CACHEFILES_DEAD, &cache->flags)) { - kerror("cull applied to dead cache"); + pr_err("cull applied to dead cache"); return -EIO; } @@ -588,11 +587,11 @@ static int cachefiles_daemon_cull(struct cachefiles_cache *cache, char *args) notdir: path_put(&path); - kerror("cull command requires dirfd to be a directory"); + pr_err("cull command requires dirfd to be a directory"); return -ENOTDIR; inval: - kerror("cull command requires dirfd and filename"); + pr_err("cull command requires dirfd and filename"); return -EINVAL; } @@ -615,7 +614,7 @@ static int cachefiles_daemon_debug(struct cachefiles_cache *cache, char *args) return 0; inval: - kerror("debug command requires mask"); + pr_err("debug command requires mask"); return -EINVAL; } @@ -635,12 +634,12 @@ static int cachefiles_daemon_inuse(struct cachefiles_cache *cache, char *args) goto inval; if (!test_bit(CACHEFILES_READY, &cache->flags)) { - kerror("inuse applied to unready cache"); + pr_err("inuse applied to unready cache"); return -EIO; } if (test_bit(CACHEFILES_DEAD, &cache->flags)) { - kerror("inuse applied to dead cache"); + pr_err("inuse applied to dead cache"); return -EIO; } @@ -660,11 +659,11 @@ static int cachefiles_daemon_inuse(struct cachefiles_cache *cache, char *args) notdir: path_put(&path); - kerror("inuse command requires dirfd to be a directory"); + pr_err("inuse command requires dirfd to be a directory"); return -ENOTDIR; inval: - kerror("inuse command requires dirfd and filename"); + pr_err("inuse command requires dirfd and filename"); return -EINVAL; } diff --git a/fs/cachefiles/interface.c b/fs/cachefiles/interface.c index e47a8d87852f..584743d456c3 100644 --- a/fs/cachefiles/interface.c +++ b/fs/cachefiles/interface.c @@ -146,7 +146,7 @@ static int cachefiles_lookup_object(struct fscache_object *_object) if (ret < 0 && ret != -ETIMEDOUT) { if (ret != -ENOBUFS) - pr_warn("CacheFiles: Lookup failed error %d\n", ret); + pr_warn("Lookup failed error %d\n", ret); fscache_object_lookup_error(&object->fscache); } diff --git a/fs/cachefiles/internal.h b/fs/cachefiles/internal.h index 5c7ec647e44c..3d50998abf57 100644 --- a/fs/cachefiles/internal.h +++ b/fs/cachefiles/internal.h @@ -9,6 +9,13 @@ * 2 of the Licence, or (at your option) any later version. */ +#ifdef pr_fmt +#undef pr_fmt +#endif + +#define pr_fmt(fmt) "CacheFiles: " fmt + + #include #include #include @@ -245,11 +252,10 @@ extern int cachefiles_remove_object_xattr(struct cachefiles_cache *cache, /* * error handling */ -#define kerror(FMT, ...) pr_err("CacheFiles: "FMT"\n", ##__VA_ARGS__) #define cachefiles_io_error(___cache, FMT, ...) \ do { \ - kerror("I/O Error: " FMT, ##__VA_ARGS__); \ + pr_err("I/O Error: " FMT, ##__VA_ARGS__); \ fscache_io_error(&(___cache)->cache); \ set_bit(CACHEFILES_DEAD, &(___cache)->flags); \ } while (0) @@ -311,7 +317,7 @@ do { \ do { \ if (unlikely(!(X))) { \ pr_err("\n"); \ - pr_err("CacheFiles: Assertion failed\n"); \ + pr_err("Assertion failed\n"); \ BUG(); \ } \ } while (0) @@ -320,7 +326,7 @@ do { \ do { \ if (unlikely(!((X) OP (Y)))) { \ pr_err("\n"); \ - pr_err("CacheFiles: Assertion failed\n"); \ + pr_err("Assertion failed\n"); \ pr_err("%lx " #OP " %lx is false\n", \ (unsigned long)(X), (unsigned long)(Y)); \ BUG(); \ @@ -331,7 +337,7 @@ do { \ do { \ if (unlikely((C) && !(X))) { \ pr_err("\n"); \ - pr_err("CacheFiles: Assertion failed\n"); \ + pr_err("Assertion failed\n"); \ BUG(); \ } \ } while (0) @@ -340,7 +346,7 @@ do { \ do { \ if (unlikely((C) && !((X) OP (Y)))) { \ pr_err("\n"); \ - pr_err("CacheFiles: Assertion failed\n"); \ + pr_err("Assertion failed\n"); \ pr_err("%lx " #OP " %lx is false\n", \ (unsigned long)(X), (unsigned long)(Y)); \ BUG(); \ diff --git a/fs/cachefiles/main.c b/fs/cachefiles/main.c index d45c59c147ce..180edfb45f66 100644 --- a/fs/cachefiles/main.c +++ b/fs/cachefiles/main.c @@ -68,7 +68,7 @@ static int __init cachefiles_init(void) SLAB_HWCACHE_ALIGN, cachefiles_object_init_once); if (!cachefiles_object_jar) { - pr_notice("CacheFiles: Failed to allocate an object jar\n"); + pr_notice("Failed to allocate an object jar\n"); goto error_object_jar; } @@ -76,7 +76,7 @@ static int __init cachefiles_init(void) if (ret < 0) goto error_proc; - pr_info("CacheFiles: Loaded\n"); + pr_info("Loaded\n"); return 0; error_proc: @@ -84,7 +84,7 @@ error_proc: error_object_jar: misc_deregister(&cachefiles_dev); error_dev: - kerror("failed to register: %d", ret); + pr_err("failed to register: %d", ret); return ret; } @@ -95,7 +95,7 @@ fs_initcall(cachefiles_init); */ static void __exit cachefiles_exit(void) { - pr_info("CacheFiles: Unloading\n"); + pr_info("Unloading\n"); cachefiles_proc_cleanup(); kmem_cache_destroy(cachefiles_object_jar); diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index 18e0d8ee3542..5bf2b41e66d3 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -131,10 +131,10 @@ found_dentry: if (fscache_object_is_live(&object->fscache)) { pr_err("\n"); - pr_err("CacheFiles: Error: Can't preemptively bury live object\n"); + pr_err("Error: Can't preemptively bury live object\n"); cachefiles_printk_object(object, NULL); } else if (test_and_set_bit(CACHEFILES_OBJECT_BURIED, &object->flags)) { - pr_err("CacheFiles: Error: Object already preemptively buried\n"); + pr_err("Error: Object already preemptively buried\n"); } write_unlock(&cache->active_lock); @@ -157,7 +157,7 @@ try_again: write_lock(&cache->active_lock); if (test_and_set_bit(CACHEFILES_OBJECT_ACTIVE, &object->flags)) { - pr_err("CacheFiles: Error: Object already active\n"); + pr_err("Error: Object already active\n"); cachefiles_printk_object(object, NULL); BUG(); } @@ -191,7 +191,7 @@ try_again: wait_for_old_object: if (fscache_object_is_live(&object->fscache)) { pr_err("\n"); - pr_err("CacheFiles: Error: Unexpected object collision\n"); + pr_err("Error: Unexpected object collision\n"); cachefiles_printk_object(object, xobject); BUG(); } @@ -238,7 +238,7 @@ wait_for_old_object: if (timeout <= 0) { pr_err("\n"); - pr_err("CacheFiles: Error: Overlong wait for old active object to go away\n"); + pr_err("Error: Overlong wait for old active object to go away\n"); cachefiles_printk_object(object, xobject); goto requeue; } @@ -543,7 +543,7 @@ lookup_again: next, next->d_inode, next->d_inode->i_ino); } else if (!S_ISDIR(next->d_inode->i_mode)) { - kerror("inode %lu is not a directory", + pr_err("inode %lu is not a directory", next->d_inode->i_ino); ret = -ENOBUFS; goto error; @@ -574,7 +574,7 @@ lookup_again: } else if (!S_ISDIR(next->d_inode->i_mode) && !S_ISREG(next->d_inode->i_mode) ) { - kerror("inode %lu is not a file or directory", + pr_err("inode %lu is not a file or directory", next->d_inode->i_ino); ret = -ENOBUFS; goto error; @@ -768,7 +768,7 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache, ASSERT(subdir->d_inode); if (!S_ISDIR(subdir->d_inode->i_mode)) { - kerror("%s is not a directory", dirname); + pr_err("%s is not a directory", dirname); ret = -EIO; goto check_error; } @@ -795,13 +795,13 @@ check_error: mkdir_error: mutex_unlock(&dir->d_inode->i_mutex); dput(subdir); - kerror("mkdir %s failed with error %d", dirname, ret); + pr_err("mkdir %s failed with error %d", dirname, ret); return ERR_PTR(ret); lookup_error: mutex_unlock(&dir->d_inode->i_mutex); ret = PTR_ERR(subdir); - kerror("Lookup %s failed with error %d", dirname, ret); + pr_err("Lookup %s failed with error %d", dirname, ret); return ERR_PTR(ret); nomem_d_alloc: @@ -891,7 +891,7 @@ lookup_error: if (ret == -EIO) { cachefiles_io_error(cache, "Lookup failed"); } else if (ret != -ENOMEM) { - kerror("Internal error: %d", ret); + pr_err("Internal error: %d", ret); ret = -EIO; } @@ -950,7 +950,7 @@ error: } if (ret != -ENOMEM) { - kerror("Internal error: %d", ret); + pr_err("Internal error: %d", ret); ret = -EIO; } diff --git a/fs/cachefiles/security.c b/fs/cachefiles/security.c index 7a6b665f6b1a..396c18ea2764 100644 --- a/fs/cachefiles/security.c +++ b/fs/cachefiles/security.c @@ -34,7 +34,7 @@ int cachefiles_get_security_ID(struct cachefiles_cache *cache) ret = set_security_override_from_ctx(new, cache->secctx); if (ret < 0) { put_cred(new); - pr_err("CacheFiles: Security denies permission to nominate security context: error %d\n", + pr_err("Security denies permission to nominate security context: error %d\n", ret); goto error; } @@ -57,14 +57,14 @@ static int cachefiles_check_cache_dir(struct cachefiles_cache *cache, ret = security_inode_mkdir(root->d_inode, root, 0); if (ret < 0) { - pr_err("CacheFiles: Security denies permission to make dirs: error %d", + pr_err("Security denies permission to make dirs: error %d", ret); return ret; } ret = security_inode_create(root->d_inode, root, 0); if (ret < 0) - pr_err("CacheFiles: Security denies permission to create files: error %d", + pr_err("Security denies permission to create files: error %d", ret); return ret; diff --git a/fs/cachefiles/xattr.c b/fs/cachefiles/xattr.c index 12b0eef84183..1ad51ffbb275 100644 --- a/fs/cachefiles/xattr.c +++ b/fs/cachefiles/xattr.c @@ -51,7 +51,7 @@ int cachefiles_check_object_type(struct cachefiles_object *object) } if (ret != -EEXIST) { - kerror("Can't set xattr on %*.*s [%lu] (err %d)", + pr_err("Can't set xattr on %*.*s [%lu] (err %d)", dentry->d_name.len, dentry->d_name.len, dentry->d_name.name, dentry->d_inode->i_ino, -ret); @@ -64,7 +64,7 @@ int cachefiles_check_object_type(struct cachefiles_object *object) if (ret == -ERANGE) goto bad_type_length; - kerror("Can't read xattr on %*.*s [%lu] (err %d)", + pr_err("Can't read xattr on %*.*s [%lu] (err %d)", dentry->d_name.len, dentry->d_name.len, dentry->d_name.name, dentry->d_inode->i_ino, -ret); @@ -85,14 +85,14 @@ error: return ret; bad_type_length: - kerror("Cache object %lu type xattr length incorrect", + pr_err("Cache object %lu type xattr length incorrect", dentry->d_inode->i_ino); ret = -EIO; goto error; bad_type: xtype[2] = 0; - kerror("Cache object %*.*s [%lu] type %s not %s", + pr_err("Cache object %*.*s [%lu] type %s not %s", dentry->d_name.len, dentry->d_name.len, dentry->d_name.name, dentry->d_inode->i_ino, xtype, type); @@ -293,7 +293,7 @@ error: return ret; bad_type_length: - kerror("Cache object %lu xattr length incorrect", + pr_err("Cache object %lu xattr length incorrect", dentry->d_inode->i_ino); ret = -EIO; goto error; -- cgit v1.2.3 From 04541a2f3160223b8e0fbfeb993b49625923bb47 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:37:34 -0700 Subject: fs/devpts/inode.c: convert printk to pr_foo() Also convert spaces to tabs (checkpatch warnings) if (!dentry) KERN_NOTICE converted to pr_err (like if (!inode) error process) [akpm@linux-foundation.org: use KBUILD_MODNAME, per Joe] Signed-off-by: Fabian Frederick Cc: Joe Perches Cc: "Theodore Ts'o" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/devpts/inode.c | 26 +++++++++++++++----------- 1 file changed, 15 insertions(+), 11 deletions(-) diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c index c71038079b47..cfe8466f7fef 100644 --- a/fs/devpts/inode.c +++ b/fs/devpts/inode.c @@ -10,6 +10,8 @@ * * ------------------------------------------------------------------------- */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include #include #include @@ -148,10 +150,10 @@ static inline struct super_block *pts_sb_from_inode(struct inode *inode) /* * parse_mount_options(): - * Set @opts to mount options specified in @data. If an option is not - * specified in @data, set it to its default value. The exception is - * 'newinstance' option which can only be set/cleared on a mount (i.e. - * cannot be changed during remount). + * Set @opts to mount options specified in @data. If an option is not + * specified in @data, set it to its default value. The exception is + * 'newinstance' option which can only be set/cleared on a mount (i.e. + * cannot be changed during remount). * * Note: @data may be NULL (in which case all options are set to default). */ @@ -225,7 +227,7 @@ static int parse_mount_options(char *data, int op, struct pts_mount_opts *opts) break; #endif default: - printk(KERN_ERR "devpts: called with bogus options\n"); + pr_err("called with bogus options\n"); return -EINVAL; } } @@ -261,7 +263,7 @@ static int mknod_ptmx(struct super_block *sb) dentry = d_alloc_name(root, "ptmx"); if (!dentry) { - printk(KERN_NOTICE "Unable to alloc dentry for ptmx node\n"); + pr_err("Unable to alloc dentry for ptmx node\n"); goto out; } @@ -270,7 +272,7 @@ static int mknod_ptmx(struct super_block *sb) */ inode = new_inode(sb); if (!inode) { - printk(KERN_ERR "Unable to alloc inode for ptmx node\n"); + pr_err("Unable to alloc inode for ptmx node\n"); dput(dentry); goto out; } @@ -303,7 +305,7 @@ static void update_ptmx_mode(struct pts_fs_info *fsi) #else static inline void update_ptmx_mode(struct pts_fs_info *fsi) { - return; + return; } #endif @@ -333,9 +335,11 @@ static int devpts_show_options(struct seq_file *seq, struct dentry *root) struct pts_mount_opts *opts = &fsi->mount_opts; if (opts->setuid) - seq_printf(seq, ",uid=%u", from_kuid_munged(&init_user_ns, opts->uid)); + seq_printf(seq, ",uid=%u", + from_kuid_munged(&init_user_ns, opts->uid)); if (opts->setgid) - seq_printf(seq, ",gid=%u", from_kgid_munged(&init_user_ns, opts->gid)); + seq_printf(seq, ",gid=%u", + from_kgid_munged(&init_user_ns, opts->gid)); seq_printf(seq, ",mode=%03o", opts->mode); #ifdef CONFIG_DEVPTS_MULTIPLE_INSTANCES seq_printf(seq, ",ptmxmode=%03o", opts->ptmxmode); @@ -396,7 +400,7 @@ devpts_fill_super(struct super_block *s, void *data, int silent) if (s->s_root) return 0; - printk(KERN_ERR "devpts: get root dentry failed\n"); + pr_err("get root dentry failed\n"); fail: return -ENOMEM; -- cgit v1.2.3 From 3e4e0f0a8756dade3023d1f47d50fbced7749788 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Fri, 6 Jun 2014 14:37:35 -0700 Subject: initramfs: remove "compression mode" choice Commit 9ba4bcb64589 ("initramfs: read CONFIG_RD_ variables for initramfs compression") removed the users of the various INITRAMFS_COMPRESSION_* Kconfig symbols. So since v3.13 the entire "Built-in initramfs compression mode" choice is a set of knobs connected to nothing. The entire choice can safely be removed. Signed-off-by: Paul Bolle Cc: P J P Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- usr/Kconfig | 77 ------------------------------------------------------------- 1 file changed, 77 deletions(-) diff --git a/usr/Kconfig b/usr/Kconfig index 642f503d3e9f..2d4c77eecf2e 100644 --- a/usr/Kconfig +++ b/usr/Kconfig @@ -98,80 +98,3 @@ config RD_LZ4 help Support loading of a LZ4 encoded initial ramdisk or cpio buffer If unsure, say N. - -choice - prompt "Built-in initramfs compression mode" if INITRAMFS_SOURCE!="" - help - This option decides by which algorithm the builtin initramfs - will be compressed. Several compression algorithms are - available, which differ in efficiency, compression and - decompression speed. Compression speed is only relevant - when building a kernel. Decompression speed is relevant at - each boot. - - If you have any problems with bzip2 or LZMA compressed - initramfs, mail me (Alain Knaff) . - - High compression options are mostly useful for users who are - low on RAM, since it reduces the memory consumption during - boot. - - If in doubt, select 'gzip' - -config INITRAMFS_COMPRESSION_NONE - bool "None" - help - Do not compress the built-in initramfs at all. This may - sound wasteful in space, but, you should be aware that the - built-in initramfs will be compressed at a later stage - anyways along with the rest of the kernel, on those - architectures that support this. - However, not compressing the initramfs may lead to slightly - higher memory consumption during a short time at boot, while - both the cpio image and the unpacked filesystem image will - be present in memory simultaneously - -config INITRAMFS_COMPRESSION_GZIP - bool "Gzip" - depends on RD_GZIP - help - The old and tried gzip compression. It provides a good balance - between compression ratio and decompression speed. - -config INITRAMFS_COMPRESSION_BZIP2 - bool "Bzip2" - depends on RD_BZIP2 - help - Its compression ratio and speed is intermediate. - Decompression speed is slowest among the choices. The initramfs - size is about 10% smaller with bzip2, in comparison to gzip. - Bzip2 uses a large amount of memory. For modern kernels you - will need at least 8MB RAM or more for booting. - -config INITRAMFS_COMPRESSION_LZMA - bool "LZMA" - depends on RD_LZMA - help - This algorithm's compression ratio is best. - Decompression speed is between the other choices. - Compression is slowest. The initramfs size is about 33% - smaller with LZMA in comparison to gzip. - -config INITRAMFS_COMPRESSION_XZ - bool "XZ" - depends on RD_XZ - help - XZ uses the LZMA2 algorithm. The initramfs size is about 30% - smaller with XZ in comparison to gzip. Decompression speed - is better than that of bzip2 but worse than gzip and LZO. - Compression is slow. - -config INITRAMFS_COMPRESSION_LZO - bool "LZO" - depends on RD_LZO - help - Its compression ratio is the poorest among the choices. The kernel - size is about 10% bigger than gzip; however its speed - (both compression and decompression) is the fastest. - -endchoice -- cgit v1.2.3 From eb66ec44f867834de054544b09b573de3a7ae456 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Fri, 6 Jun 2014 14:37:36 -0700 Subject: ipc: constify ipc_ops There is no need to recreate the very same ipc_ops structure on every kernel entry for msgget/semget/shmget. Just declare it static and be done with it. While at it, constify it as we don't modify the structure at runtime. Found in the PaX patch, written by the PaX Team. Signed-off-by: Mathias Krause Cc: PaX Team Cc: Davidlohr Bueso Cc: Manfred Spraul Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/msg.c | 9 ++++----- ipc/sem.c | 10 +++++----- ipc/shm.c | 10 +++++----- ipc/util.c | 8 ++++---- ipc/util.h | 2 +- 5 files changed, 19 insertions(+), 20 deletions(-) diff --git a/ipc/msg.c b/ipc/msg.c index 649853105a5d..35e4018de53c 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -306,15 +306,14 @@ static inline int msg_security(struct kern_ipc_perm *ipcp, int msgflg) SYSCALL_DEFINE2(msgget, key_t, key, int, msgflg) { struct ipc_namespace *ns; - struct ipc_ops msg_ops; + static const struct ipc_ops msg_ops = { + .getnew = newque, + .associate = msg_security, + }; struct ipc_params msg_params; ns = current->nsproxy->ipc_ns; - msg_ops.getnew = newque; - msg_ops.associate = msg_security; - msg_ops.more_checks = NULL; - msg_params.key = key; msg_params.flg = msgflg; diff --git a/ipc/sem.c b/ipc/sem.c index bee555417312..3fcbc96abee9 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -564,7 +564,11 @@ static inline int sem_more_checks(struct kern_ipc_perm *ipcp, SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg) { struct ipc_namespace *ns; - struct ipc_ops sem_ops; + static const struct ipc_ops sem_ops = { + .getnew = newary, + .associate = sem_security, + .more_checks = sem_more_checks, + }; struct ipc_params sem_params; ns = current->nsproxy->ipc_ns; @@ -572,10 +576,6 @@ SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg) if (nsems < 0 || nsems > ns->sc_semmsl) return -EINVAL; - sem_ops.getnew = newary; - sem_ops.associate = sem_security; - sem_ops.more_checks = sem_more_checks; - sem_params.key = key; sem_params.flg = semflg; sem_params.u.nsems = nsems; diff --git a/ipc/shm.c b/ipc/shm.c index 76459616a7fa..b54c93f6d117 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -609,15 +609,15 @@ static inline int shm_more_checks(struct kern_ipc_perm *ipcp, SYSCALL_DEFINE3(shmget, key_t, key, size_t, size, int, shmflg) { struct ipc_namespace *ns; - struct ipc_ops shm_ops; + static const struct ipc_ops shm_ops = { + .getnew = newseg, + .associate = shm_security, + .more_checks = shm_more_checks, + }; struct ipc_params shm_params; ns = current->nsproxy->ipc_ns; - shm_ops.getnew = newseg; - shm_ops.associate = shm_security; - shm_ops.more_checks = shm_more_checks; - shm_params.key = key; shm_params.flg = shmflg; shm_params.u.size = size; diff --git a/ipc/util.c b/ipc/util.c index 2eb0d1eaa312..9b3fa38afe2c 100644 --- a/ipc/util.c +++ b/ipc/util.c @@ -317,7 +317,7 @@ int ipc_addid(struct ipc_ids *ids, struct kern_ipc_perm *new, int size) * when the key is IPC_PRIVATE. */ static int ipcget_new(struct ipc_namespace *ns, struct ipc_ids *ids, - struct ipc_ops *ops, struct ipc_params *params) + const struct ipc_ops *ops, struct ipc_params *params) { int err; @@ -344,7 +344,7 @@ static int ipcget_new(struct ipc_namespace *ns, struct ipc_ids *ids, */ static int ipc_check_perms(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp, - struct ipc_ops *ops, + const struct ipc_ops *ops, struct ipc_params *params) { int err; @@ -375,7 +375,7 @@ static int ipc_check_perms(struct ipc_namespace *ns, * On success, the ipc id is returned. */ static int ipcget_public(struct ipc_namespace *ns, struct ipc_ids *ids, - struct ipc_ops *ops, struct ipc_params *params) + const struct ipc_ops *ops, struct ipc_params *params) { struct kern_ipc_perm *ipcp; int flg = params->flg; @@ -678,7 +678,7 @@ out: * Common routine called by sys_msgget(), sys_semget() and sys_shmget(). */ int ipcget(struct ipc_namespace *ns, struct ipc_ids *ids, - struct ipc_ops *ops, struct ipc_params *params) + const struct ipc_ops *ops, struct ipc_params *params) { if (params->key == IPC_PRIVATE) return ipcget_new(ns, ids, ops, params); diff --git a/ipc/util.h b/ipc/util.h index 9c47d6f6c7b4..e1153ad574b7 100644 --- a/ipc/util.h +++ b/ipc/util.h @@ -201,7 +201,7 @@ static inline bool ipc_valid_object(struct kern_ipc_perm *perm) struct kern_ipc_perm *ipc_obtain_object_check(struct ipc_ids *ids, int id); int ipcget(struct ipc_namespace *ns, struct ipc_ids *ids, - struct ipc_ops *ops, struct ipc_params *params); + const struct ipc_ops *ops, struct ipc_params *params); void free_ipcs(struct ipc_namespace *ns, struct ipc_ids *ids, void (*free)(struct ipc_namespace *, struct kern_ipc_perm *)); #endif -- cgit v1.2.3 From 7153e402731c3e72331633d1ac15a654768aecac Mon Sep 17 00:00:00 2001 From: Paul McQuade Date: Fri, 6 Jun 2014 14:37:37 -0700 Subject: ipc, kernel: use Linux headers Use #include instead of Use #include instead of Signed-off-by: Paul McQuade Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/compat.c | 2 +- ipc/compat_mq.c | 2 +- ipc/msg.c | 2 +- ipc/sem.c | 2 +- ipc/shm.c | 2 +- kernel/acct.c | 2 +- kernel/audit.c | 2 +- 7 files changed, 7 insertions(+), 7 deletions(-) diff --git a/ipc/compat.c b/ipc/compat.c index 45d035d4cedc..b5ef4f7946dc 100644 --- a/ipc/compat.c +++ b/ipc/compat.c @@ -30,7 +30,7 @@ #include #include -#include +#include #include "util.h" diff --git a/ipc/compat_mq.c b/ipc/compat_mq.c index 90d29f59cac6..ef6f91cc4490 100644 --- a/ipc/compat_mq.c +++ b/ipc/compat_mq.c @@ -12,7 +12,7 @@ #include #include -#include +#include struct compat_mq_attr { compat_long_t mq_flags; /* message queue flags */ diff --git a/ipc/msg.c b/ipc/msg.c index 35e4018de53c..d608e6dde919 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -39,7 +39,7 @@ #include #include -#include +#include #include "util.h" /* diff --git a/ipc/sem.c b/ipc/sem.c index 3fcbc96abee9..e8dcc72d5bef 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -87,7 +87,7 @@ #include #include -#include +#include #include "util.h" /* One semaphore structure for each semaphore in the system. */ diff --git a/ipc/shm.c b/ipc/shm.c index b54c93f6d117..fe49fdd240a8 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -43,7 +43,7 @@ #include #include -#include +#include #include "util.h" diff --git a/kernel/acct.c b/kernel/acct.c index 8d6e145138bb..df2851905d14 100644 --- a/kernel/acct.c +++ b/kernel/acct.c @@ -55,7 +55,7 @@ #include #include #include -#include +#include #include #include /* sector_div */ #include diff --git a/kernel/audit.c b/kernel/audit.c index 47845c57eb19..f30106459a32 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -44,7 +44,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include -#include +#include #include #include #include -- cgit v1.2.3 From 46c0a8ca3e841b14a1d981e2116eaf2d1c7f2235 Mon Sep 17 00:00:00 2001 From: Paul McQuade Date: Fri, 6 Jun 2014 14:37:37 -0700 Subject: ipc, kernel: clear whitespace trailing whitespace Signed-off-by: Paul McQuade Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/msg.c | 31 +++++++++++++++---------------- ipc/sem.c | 10 +++++----- ipc/shm.c | 2 +- ipc/util.c | 4 ++-- ipc/util.h | 8 ++++---- kernel/acct.c | 4 ++-- 6 files changed, 29 insertions(+), 30 deletions(-) diff --git a/ipc/msg.c b/ipc/msg.c index d608e6dde919..7ed1ef338e76 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -611,23 +611,22 @@ SYSCALL_DEFINE3(msgctl, int, msqid, int, cmd, struct msqid_ds __user *, buf) static int testmsg(struct msg_msg *msg, long type, int mode) { - switch (mode) - { - case SEARCH_ANY: - case SEARCH_NUMBER: + switch (mode) { + case SEARCH_ANY: + case SEARCH_NUMBER: + return 1; + case SEARCH_LESSEQUAL: + if (msg->m_type <= type) return 1; - case SEARCH_LESSEQUAL: - if (msg->m_type <= type) - return 1; - break; - case SEARCH_EQUAL: - if (msg->m_type == type) - return 1; - break; - case SEARCH_NOTEQUAL: - if (msg->m_type != type) - return 1; - break; + break; + case SEARCH_EQUAL: + if (msg->m_type == type) + return 1; + break; + case SEARCH_NOTEQUAL: + if (msg->m_type != type) + return 1; + break; } return 0; } diff --git a/ipc/sem.c b/ipc/sem.c index e8dcc72d5bef..fe0928a3d08b 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -160,7 +160,7 @@ static int sysvipc_sem_proc_show(struct seq_file *s, void *it); * sem_array.pending{_alter,_cont}, * sem_array.sem_undo: global sem_lock() for read/write * sem_undo.proc_next: only "current" is allowed to read/write that field. - * + * * sem_array.sem_base[i].pending_{const,alter}: * global or semaphore sem_lock() for read/write */ @@ -1161,7 +1161,7 @@ static int semctl_nolock(struct ipc_namespace *ns, int semid, err = security_sem_semctl(NULL, cmd); if (err) return err; - + memset(&seminfo, 0, sizeof(seminfo)); seminfo.semmni = ns->sc_semmni; seminfo.semmns = ns->sc_semmns; @@ -1181,7 +1181,7 @@ static int semctl_nolock(struct ipc_namespace *ns, int semid, } max_id = ipc_get_maxid(&sem_ids(ns)); up_read(&sem_ids(ns).rwsem); - if (copy_to_user(p, &seminfo, sizeof(struct seminfo))) + if (copy_to_user(p, &seminfo, sizeof(struct seminfo))) return -EFAULT; return (max_id < 0) ? 0 : max_id; } @@ -1883,7 +1883,7 @@ SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsops, /* We need to sleep on this operation, so we put the current * task into the pending queue and go to sleep. */ - + queue.sops = sops; queue.nsops = nsops; queue.undo = un; @@ -2016,7 +2016,7 @@ int copy_semundo(unsigned long clone_flags, struct task_struct *tsk) return error; atomic_inc(&undo_list->refcnt); tsk->sysvsem.undo_list = undo_list; - } else + } else tsk->sysvsem.undo_list = NULL; return 0; diff --git a/ipc/shm.c b/ipc/shm.c index fe49fdd240a8..2b64b0d25bba 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -694,7 +694,7 @@ static inline unsigned long copy_shminfo_to_user(void __user *buf, struct shminf out.shmmin = in->shmmin; out.shmmni = in->shmmni; out.shmseg = in->shmseg; - out.shmall = in->shmall; + out.shmall = in->shmall; return copy_to_user(buf, &out, sizeof(out)); } diff --git a/ipc/util.c b/ipc/util.c index 9b3fa38afe2c..27d74e69fd57 100644 --- a/ipc/util.c +++ b/ipc/util.c @@ -183,7 +183,7 @@ void __init ipc_init_proc_interface(const char *path, const char *header, * ipc_findkey - find a key in an ipc identifier set * @ids: ipc identifier set * @key: key to find - * + * * Returns the locked pointer to the ipc structure if found or NULL * otherwise. If key is found ipc points to the owning ipc structure * @@ -538,7 +538,7 @@ int ipcperms(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp, short flag) else if (in_group_p(ipcp->cgid) || in_group_p(ipcp->gid)) granted_mode >>= 3; /* is there some bit set in requested_mode but not in granted_mode? */ - if ((requested_mode & ~granted_mode & 0007) && + if ((requested_mode & ~granted_mode & 0007) && !ns_capable(ns->user_ns, CAP_IPC_OWNER)) return -1; diff --git a/ipc/util.h b/ipc/util.h index e1153ad574b7..1a5a0fcd099c 100644 --- a/ipc/util.h +++ b/ipc/util.h @@ -78,9 +78,9 @@ struct ipc_params { * . routine to call for an extra check if needed */ struct ipc_ops { - int (*getnew) (struct ipc_namespace *, struct ipc_params *); - int (*associate) (struct kern_ipc_perm *, int); - int (*more_checks) (struct kern_ipc_perm *, struct ipc_params *); + int (*getnew)(struct ipc_namespace *, struct ipc_params *); + int (*associate)(struct kern_ipc_perm *, int); + int (*more_checks)(struct kern_ipc_perm *, struct ipc_params *); }; struct seq_file; @@ -142,7 +142,7 @@ struct kern_ipc_perm *ipcctl_pre_down_nolock(struct ipc_namespace *ns, struct ipc64_perm *perm, int extra_perm); #ifndef CONFIG_ARCH_WANT_IPC_PARSE_VERSION - /* On IA-64, we always use the "64-bit version" of the IPC structures. */ +/* On IA-64, we always use the "64-bit version" of the IPC structures. */ # define ipc_parse_version(cmd) IPC_64 #else int ipc_parse_version(int *cmd); diff --git a/kernel/acct.c b/kernel/acct.c index df2851905d14..808a86ff229d 100644 --- a/kernel/acct.c +++ b/kernel/acct.c @@ -134,7 +134,7 @@ static int check_free_space(struct bsd_acct_struct *acct, struct file *file) spin_lock(&acct_lock); if (file != acct->file) { if (act) - res = act>0; + res = act > 0; goto out; } @@ -262,7 +262,7 @@ SYSCALL_DEFINE1(acct, const char __user *, name) if (name) { struct filename *tmp = getname(name); if (IS_ERR(tmp)) - return (PTR_ERR(tmp)); + return PTR_ERR(tmp); error = acct_on(tmp); putname(tmp); } else { -- cgit v1.2.3 From 247a8ce8229b16d4ffa9f5125fb6583aa749679d Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Fri, 6 Jun 2014 14:37:38 -0700 Subject: ipc/shm.c: check for ulong overflows in shmat The increase of SHMMAX/SHMALL is a 4 patch series. The change itself is trivial, the only problem are interger overflows. The overflows are not new, but if we make huge values the default, then the code should be free from overflows. SHMMAX: - shmmem_file_setup places a hard limit on the segment size: MAX_LFS_FILESIZE. On 32-bit, the limit is > 1 TB, i.e. 4 GB-1 byte segments are possible. Rounded up to full pages the actual allocated size is 0. --> must be fixed, patch 3 - shmat: - find_vma_intersection does not handle overflows properly. --> must be fixed, patch 1 - the rest is fine, do_mmap_pgoff limits mappings to TASK_SIZE and checks for overflows (i.e.: map 2 GB, starting from addr=2.5GB fails). SHMALL: - after creating 8192 segments size (1L<<63)-1, shm_tot overflows and returns 0. --> must be fixed, patch 2. Userspace: - Obviously, there could be overflows in userspace. There is nothing we can do, only use values smaller than ULONG_MAX. I ended with "ULONG_MAX - 1L<<24": - TASK_SIZE cannot be used because it is the size of the current task. Could be 4G if it's a 32-bit task on a 64-bit kernel. - The maximum size is not standardized across archs: I found TASK_MAX_SIZE, TASK_SIZE_MAX and TASK_SIZE_64. - Just in case some arch revives a 4G/4G split, nearly ULONG_MAX is a valid segment size. - Using "0" as a magic value for infinity is even worse, because right now 0 means 0, i.e. fail all allocations. This patch (of 4): find_vma_intersection() does not work as intended if addr+size overflows. The patch adds a manual check before the call to find_vma_intersection. Signed-off-by: Manfred Spraul Acked-by: Davidlohr Bueso Acked-by: KOSAKI Motohiro Acked-by: Michael Kerrisk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/shm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/ipc/shm.c b/ipc/shm.c index 2b64b0d25bba..dda8f1ff3c35 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -1160,6 +1160,9 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr, down_write(¤t->mm->mmap_sem); if (addr && !(shmflg & SHM_REMAP)) { err = -EINVAL; + if (addr + size < addr) + goto invalid; + if (find_vma_intersection(current->mm, addr, addr + size)) goto invalid; /* -- cgit v1.2.3 From 09c6eb1f651dad601f02435bbd79734954960c42 Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Fri, 6 Jun 2014 14:37:40 -0700 Subject: ipc/shm.c: check for overflows of shm_tot shm_tot counts the total number of pages used by shm segments. If SHMALL is ULONG_MAX (or nearly ULONG_MAX), then the number can overflow. Subsequent calls to shmctl(,SHM_INFO,) would return wrong values for shm_tot. The patch adds a detection for overflows. Signed-off-by: Manfred Spraul Acked-by: Davidlohr Bueso Acked-by: KOSAKI Motohiro Acked-by: Michael Kerrisk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/shm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/ipc/shm.c b/ipc/shm.c index dda8f1ff3c35..9e51bf246344 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -493,7 +493,8 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params) if (size < SHMMIN || size > ns->shm_ctlmax) return -EINVAL; - if (ns->shm_tot + numpages > ns->shm_ctlall) + if (ns->shm_tot + numpages < ns->shm_tot || + ns->shm_tot + numpages > ns->shm_ctlall) return -ENOSPC; shp = ipc_rcu_alloc(sizeof(*shp)); -- cgit v1.2.3 From 1376327ce1f790070ec7128b285e2d8965e760a5 Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Fri, 6 Jun 2014 14:37:41 -0700 Subject: ipc/shm.c: check for integer overflow during shmget. SHMMAX is the upper limit for the size of a shared memory segment, counted in bytes. The actual allocation is that size, rounded up to the next full page. Add a check that prevents the creation of segments where the rounded up size causes an integer overflow. Signed-off-by: Manfred Spraul Acked-by: Davidlohr Bueso Acked-by: KOSAKI Motohiro Acked-by: Michael Kerrisk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/shm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/ipc/shm.c b/ipc/shm.c index 9e51bf246344..89fc354156cb 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -493,6 +493,9 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params) if (size < SHMMIN || size > ns->shm_ctlmax) return -EINVAL; + if (numpages << PAGE_SHIFT < size) + return -ENOSPC; + if (ns->shm_tot + numpages < ns->shm_tot || ns->shm_tot + numpages > ns->shm_ctlall) return -ENOSPC; -- cgit v1.2.3 From 060028bac94bf60a65415d1d55a359c3a17d5c31 Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Fri, 6 Jun 2014 14:37:42 -0700 Subject: ipc/shm.c: increase the defaults for SHMALL, SHMMAX System V shared memory a) can be abused to trigger out-of-memory conditions and the standard measures against out-of-memory do not work: - it is not possible to use setrlimit to limit the size of shm segments. - segments can exist without association with any processes, thus the oom-killer is unable to free that memory. b) is typically used for shared information - today often multiple GB. (e.g. database shared buffers) The current default is a maximum segment size of 32 MB and a maximum total size of 8 GB. This is often too much for a) and not enough for b), which means that lots of users must change the defaults. This patch increases the default limits (nearly) to the maximum, which is perfect for case b). The defaults are used after boot and as the initial value for each new namespace. Admins/distros that need a protection against a) should reduce the limits and/or enable shm_rmid_forced. Unix has historically required setting these limits for shared memory, and Linux inherited such behavior. The consequence of this is added complexity for users and administrators. One very common example are Database setup/installation documents and scripts, where users must manually calculate the values for these limits. This also requires (some) knowledge of how the underlying memory management works, thus causing, in many occasions, the limits to just be flat out wrong. Disabling these limits sooner could have saved companies a lot of time, headaches and money for support. But it's never too late, simplify users life now. Further notes: - The patch only changes default, overrides behave as before: # sysctl kernel.shmall=33554432 would recreate the previous limit for SHMMAX (for the current namespace). - Disabling sysv shm allocation is possible with: # sysctl kernel.shmall=0 (not a new feature, also per-namespace) - The limits are intentionally set to a value slightly less than ULONG_MAX, to avoid triggering overflows in user space apps. [not unreasonable, see http://marc.info/?l=linux-mm&m=139638334330127] Signed-off-by: Manfred Spraul Signed-off-by: Davidlohr Bueso Reported-by: Davidlohr Bueso Acked-by: Michael Kerrisk Acked-by: KOSAKI Motohiro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/shm.h | 3 +-- include/uapi/linux/shm.h | 8 +++----- 2 files changed, 4 insertions(+), 7 deletions(-) diff --git a/include/linux/shm.h b/include/linux/shm.h index 1e2cd2e6b540..57d77709fbe2 100644 --- a/include/linux/shm.h +++ b/include/linux/shm.h @@ -3,9 +3,8 @@ #include #include - -#define SHMALL (SHMMAX/PAGE_SIZE*(SHMMNI/16)) /* max shm system wide (pages) */ #include + struct shmid_kernel /* private to the kernel */ { struct kern_ipc_perm shm_perm; diff --git a/include/uapi/linux/shm.h b/include/uapi/linux/shm.h index 78b69413f582..74e786de6f4e 100644 --- a/include/uapi/linux/shm.h +++ b/include/uapi/linux/shm.h @@ -9,15 +9,13 @@ /* * SHMMAX, SHMMNI and SHMALL are upper limits are defaults which can - * be increased by sysctl + * be modified by sysctl. */ -#define SHMMAX 0x2000000 /* max shared seg size (bytes) */ #define SHMMIN 1 /* min shared seg size (bytes) */ #define SHMMNI 4096 /* max num of segs system wide */ -#ifndef __KERNEL__ -#define SHMALL (SHMMAX/getpagesize()*(SHMMNI/16)) -#endif +#define SHMMAX (ULONG_MAX - (1L<<24)) /* max shared seg size (bytes) */ +#define SHMALL (ULONG_MAX - (1L<<24)) /* max shm system wide (pages) */ #define SHMSEG SHMMNI /* max shared segs per process */ -- cgit v1.2.3 From f57a19a7bcd9d1b4b539daad5acd12ba663812b5 Mon Sep 17 00:00:00 2001 From: Davidlohr Bueso Date: Fri, 6 Jun 2014 14:37:43 -0700 Subject: ipc,shm: document new limits in the uapi header This is useful in the future and allows users to better understand the reasoning behind the changes. Also use UL as we're dealing with it anyways. Signed-off-by: Davidlohr Bueso Cc: Michael Kerrisk Cc: Manfred Spraul Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/uapi/linux/shm.h | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/include/uapi/linux/shm.h b/include/uapi/linux/shm.h index 74e786de6f4e..1fbf24ea37fd 100644 --- a/include/uapi/linux/shm.h +++ b/include/uapi/linux/shm.h @@ -8,17 +8,20 @@ #endif /* - * SHMMAX, SHMMNI and SHMALL are upper limits are defaults which can - * be modified by sysctl. + * SHMMNI, SHMMAX and SHMALL are default upper limits which can be + * modified by sysctl. The SHMMAX and SHMALL values have been chosen to + * be as large possible without facilitating scenarios where userspace + * causes overflows when adjusting the limits via operations of the form + * "retrieve current limit; add X; update limit". It is therefore not + * advised to make SHMMAX and SHMALL any larger. These limits are + * suitable for both 32 and 64-bit systems. */ - #define SHMMIN 1 /* min shared seg size (bytes) */ #define SHMMNI 4096 /* max num of segs system wide */ -#define SHMMAX (ULONG_MAX - (1L<<24)) /* max shared seg size (bytes) */ -#define SHMALL (ULONG_MAX - (1L<<24)) /* max shm system wide (pages) */ +#define SHMMAX (ULONG_MAX - (1UL << 24)) /* max shared seg size (bytes) */ +#define SHMALL (ULONG_MAX - (1UL << 24)) /* max shm system wide (pages) */ #define SHMSEG SHMMNI /* max shared segs per process */ - /* Obsolete, used only for backwards compatibility and libc5 compiles */ struct shmid_ds { struct ipc_perm shm_perm; /* operation perms */ -- cgit v1.2.3 From f75a2f358d840e99212b1828b131e8fe8629ac43 Mon Sep 17 00:00:00 2001 From: Davidlohr Bueso Date: Fri, 6 Jun 2014 14:37:44 -0700 Subject: ipc,msg: use current->state helpers Call __set_current_state() instead of assigning the new state directly. Signed-off-by: Davidlohr Bueso Signed-off-by: Manfred Spraul Cc: Aswin Chandramouleeswaran Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/msg.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/ipc/msg.c b/ipc/msg.c index 7ed1ef338e76..5a8489b36e5f 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -227,7 +227,7 @@ static int newque(struct ipc_namespace *ns, struct ipc_params *params) static inline void ss_add(struct msg_queue *msq, struct msg_sender *mss) { mss->tsk = current; - current->state = TASK_INTERRUPTIBLE; + __set_current_state(TASK_INTERRUPTIBLE); list_add_tail(&mss->list, &msq->q_senders); } @@ -976,7 +976,7 @@ long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp, int msgfl else msr_d.r_maxsize = bufsz; msr_d.r_msg = ERR_PTR(-EAGAIN); - current->state = TASK_INTERRUPTIBLE; + __set_current_state(TASK_INTERRUPTIBLE); ipc_unlock_object(&msq->q_perm); rcu_read_unlock(); -- cgit v1.2.3 From 3440a6bd1d2eeb27276f6bd410e0902dcba09f0e Mon Sep 17 00:00:00 2001 From: Davidlohr Bueso Date: Fri, 6 Jun 2014 14:37:45 -0700 Subject: ipc,msg: move some msgq ns code around Nothing big and no logical changes, just get rid of some redundant function declarations. Move msg_[init/exit]_ns down the end of the file. Signed-off-by: Davidlohr Bueso Signed-off-by: Manfred Spraul Cc: Aswin Chandramouleeswaran Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/msg.c | 132 ++++++++++++++++++++++++++++++-------------------------------- 1 file changed, 63 insertions(+), 69 deletions(-) diff --git a/ipc/msg.c b/ipc/msg.c index 5a8489b36e5f..6d33e30c7c39 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -70,75 +70,6 @@ struct msg_sender { #define msg_ids(ns) ((ns)->ids[IPC_MSG_IDS]) -static void freeque(struct ipc_namespace *, struct kern_ipc_perm *); -static int newque(struct ipc_namespace *, struct ipc_params *); -#ifdef CONFIG_PROC_FS -static int sysvipc_msg_proc_show(struct seq_file *s, void *it); -#endif - -/* - * Scale msgmni with the available lowmem size: the memory dedicated to msg - * queues should occupy at most 1/MSG_MEM_SCALE of lowmem. - * Also take into account the number of nsproxies created so far. - * This should be done staying within the (MSGMNI , IPCMNI/nr_ipc_ns) range. - */ -void recompute_msgmni(struct ipc_namespace *ns) -{ - struct sysinfo i; - unsigned long allowed; - int nb_ns; - - si_meminfo(&i); - allowed = (((i.totalram - i.totalhigh) / MSG_MEM_SCALE) * i.mem_unit) - / MSGMNB; - nb_ns = atomic_read(&nr_ipc_ns); - allowed /= nb_ns; - - if (allowed < MSGMNI) { - ns->msg_ctlmni = MSGMNI; - return; - } - - if (allowed > IPCMNI / nb_ns) { - ns->msg_ctlmni = IPCMNI / nb_ns; - return; - } - - ns->msg_ctlmni = allowed; -} - -void msg_init_ns(struct ipc_namespace *ns) -{ - ns->msg_ctlmax = MSGMAX; - ns->msg_ctlmnb = MSGMNB; - - recompute_msgmni(ns); - - atomic_set(&ns->msg_bytes, 0); - atomic_set(&ns->msg_hdrs, 0); - ipc_init_ids(&ns->ids[IPC_MSG_IDS]); -} - -#ifdef CONFIG_IPC_NS -void msg_exit_ns(struct ipc_namespace *ns) -{ - free_ipcs(ns, &msg_ids(ns), freeque); - idr_destroy(&ns->ids[IPC_MSG_IDS].ipcs_idr); -} -#endif - -void __init msg_init(void) -{ - msg_init_ns(&init_ipc_ns); - - printk(KERN_INFO "msgmni has been set to %d\n", - init_ipc_ns.msg_ctlmni); - - ipc_init_proc_interface("sysvipc/msg", - " key msqid perms cbytes qnum lspid lrpid uid gid cuid cgid stime rtime ctime\n", - IPC_MSG_IDS, sysvipc_msg_proc_show); -} - static inline struct msg_queue *msq_obtain_object(struct ipc_namespace *ns, int id) { struct kern_ipc_perm *ipcp = ipc_obtain_object(&msg_ids(ns), id); @@ -1054,6 +985,57 @@ SYSCALL_DEFINE5(msgrcv, int, msqid, struct msgbuf __user *, msgp, size_t, msgsz, return do_msgrcv(msqid, msgp, msgsz, msgtyp, msgflg, do_msg_fill); } +/* + * Scale msgmni with the available lowmem size: the memory dedicated to msg + * queues should occupy at most 1/MSG_MEM_SCALE of lowmem. + * Also take into account the number of nsproxies created so far. + * This should be done staying within the (MSGMNI , IPCMNI/nr_ipc_ns) range. + */ +void recompute_msgmni(struct ipc_namespace *ns) +{ + struct sysinfo i; + unsigned long allowed; + int nb_ns; + + si_meminfo(&i); + allowed = (((i.totalram - i.totalhigh) / MSG_MEM_SCALE) * i.mem_unit) + / MSGMNB; + nb_ns = atomic_read(&nr_ipc_ns); + allowed /= nb_ns; + + if (allowed < MSGMNI) { + ns->msg_ctlmni = MSGMNI; + return; + } + + if (allowed > IPCMNI / nb_ns) { + ns->msg_ctlmni = IPCMNI / nb_ns; + return; + } + + ns->msg_ctlmni = allowed; +} + +void msg_init_ns(struct ipc_namespace *ns) +{ + ns->msg_ctlmax = MSGMAX; + ns->msg_ctlmnb = MSGMNB; + + recompute_msgmni(ns); + + atomic_set(&ns->msg_bytes, 0); + atomic_set(&ns->msg_hdrs, 0); + ipc_init_ids(&ns->ids[IPC_MSG_IDS]); +} + +#ifdef CONFIG_IPC_NS +void msg_exit_ns(struct ipc_namespace *ns) +{ + free_ipcs(ns, &msg_ids(ns), freeque); + idr_destroy(&ns->ids[IPC_MSG_IDS].ipcs_idr); +} +#endif + #ifdef CONFIG_PROC_FS static int sysvipc_msg_proc_show(struct seq_file *s, void *it) { @@ -1078,3 +1060,15 @@ static int sysvipc_msg_proc_show(struct seq_file *s, void *it) msq->q_ctime); } #endif + +void __init msg_init(void) +{ + msg_init_ns(&init_ipc_ns); + + printk(KERN_INFO "msgmni has been set to %d\n", + init_ipc_ns.msg_ctlmni); + + ipc_init_proc_interface("sysvipc/msg", + " key msqid perms cbytes qnum lspid lrpid uid gid cuid cgid stime rtime ctime\n", + IPC_MSG_IDS, sysvipc_msg_proc_show); +} -- cgit v1.2.3 From 4bb6657dd3a55ab507502d82dbee9db276602669 Mon Sep 17 00:00:00 2001 From: Davidlohr Bueso Date: Fri, 6 Jun 2014 14:37:46 -0700 Subject: ipc,msg: document volatile r_msg The need for volatile is not obvious, document it. Signed-off-by: Davidlohr Bueso Signed-off-by: Manfred Spraul Cc: Aswin Chandramouleeswaran Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/msg.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/ipc/msg.c b/ipc/msg.c index 6d33e30c7c39..c5d8e3749985 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -42,9 +42,7 @@ #include #include "util.h" -/* - * one msg_receiver structure for each sleeping receiver: - */ +/* one msg_receiver structure for each sleeping receiver */ struct msg_receiver { struct list_head r_list; struct task_struct *r_tsk; @@ -53,6 +51,12 @@ struct msg_receiver { long r_msgtype; long r_maxsize; + /* + * Mark r_msg volatile so that the compiler + * does not try to get smart and optimize + * it. We rely on this for the lockless + * receive algorithm. + */ struct msg_msg *volatile r_msg; }; -- cgit v1.2.3 From 1994862dc9c16f360a9169a4d27200d15ba29713 Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Fri, 6 Jun 2014 14:37:47 -0700 Subject: ipc/sem.c: bugfix for semctl(,,GETZCNT) GETZCNT is supposed to return the number of threads that wait until a semaphore value becomes 0. The current implementation overlooks complex operations that contain both wait-for-zero operation and operations that alter at least one semaphore. The patch fixes that. It's intentionally copy&paste, this will be cleaned up in the next patch. Signed-off-by: Manfred Spraul Cc: Davidlohr Bueso Cc: Michael Kerrisk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/sem.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/ipc/sem.c b/ipc/sem.c index fe0928a3d08b..4321fa420fe1 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -1047,6 +1047,16 @@ static int count_semzcnt(struct sem_array *sma, ushort semnum) && !(sops[i].sem_flg & IPC_NOWAIT)) semzcnt++; } + list_for_each_entry(q, &sma->pending_alter, list) { + struct sembuf *sops = q->sops; + int nsops = q->nsops; + int i; + for (i = 0; i < nsops; i++) + if (sops[i].sem_num == semnum + && (sops[i].sem_op == 0) + && !(sops[i].sem_flg & IPC_NOWAIT)) + semzcnt++; + } return semzcnt; } -- cgit v1.2.3 From 2f2ed41dcaec34f2d6f224aa84efcc5a9dd8d5c3 Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Fri, 6 Jun 2014 14:37:48 -0700 Subject: ipc/sem.c: remove code duplication count_semzcnt and count_semncnt are more of less identical. The patch creates a single function that either counts the number of tasks waiting for zero or waiting due to a decrease operation. Compared to the initial version, the BUG_ONs were removed. Signed-off-by: Manfred Spraul Cc: Davidlohr Bueso Cc: Michael Kerrisk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/sem.c | 107 ++++++++++++++++++++++++++++++-------------------------------- 1 file changed, 51 insertions(+), 56 deletions(-) diff --git a/ipc/sem.c b/ipc/sem.c index 4321fa420fe1..d73b3eff80f0 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -47,8 +47,7 @@ * Thus: Perfect SMP scaling between independent semaphore arrays. * If multiple semaphores in one array are used, then cache line * trashing on the semaphore array spinlock will limit the scaling. - * - semncnt and semzcnt are calculated on demand in count_semncnt() and - * count_semzcnt() + * - semncnt and semzcnt are calculated on demand in count_semcnt() * - the task that performs a successful semop() scans the list of all * sleeping tasks and completes any pending operations that can be fulfilled. * Semaphores are actively given to waiting tasks (necessary for FIFO). @@ -989,6 +988,31 @@ static void do_smart_update(struct sem_array *sma, struct sembuf *sops, int nsop set_semotime(sma, sops); } +/* + * check_qop: Test how often a queued operation sleeps on the semaphore semnum + */ +static int check_qop(struct sem_array *sma, int semnum, struct sem_queue *q, + bool count_zero) +{ + struct sembuf *sops = q->sops; + int nsops = q->nsops; + int i, semcnt; + + semcnt = 0; + + for (i = 0; i < nsops; i++) { + if (sops[i].sem_num != semnum) + continue; + if (sops[i].sem_flg & IPC_NOWAIT) + continue; + if (count_zero && sops[i].sem_op == 0) + semcnt++; + if (!count_zero && sops[i].sem_op < 0) + semcnt++; + } + return semcnt; +} + /* The following counts are associated to each semaphore: * semncnt number of tasks waiting on semval being nonzero * semzcnt number of tasks waiting on semval being zero @@ -998,66 +1022,37 @@ static void do_smart_update(struct sem_array *sma, struct sembuf *sops, int nsop * The counts we return here are a rough approximation, but still * warrant that semncnt+semzcnt>0 if the task is on the pending queue. */ -static int count_semncnt(struct sem_array *sma, ushort semnum) +static int count_semcnt(struct sem_array *sma, ushort semnum, + bool count_zero) { - int semncnt; + struct list_head *l; struct sem_queue *q; + int semcnt; - semncnt = 0; - list_for_each_entry(q, &sma->sem_base[semnum].pending_alter, list) { - struct sembuf *sops = q->sops; - BUG_ON(sops->sem_num != semnum); - if ((sops->sem_op < 0) && !(sops->sem_flg & IPC_NOWAIT)) - semncnt++; - } - - list_for_each_entry(q, &sma->pending_alter, list) { - struct sembuf *sops = q->sops; - int nsops = q->nsops; - int i; - for (i = 0; i < nsops; i++) - if (sops[i].sem_num == semnum - && (sops[i].sem_op < 0) - && !(sops[i].sem_flg & IPC_NOWAIT)) - semncnt++; - } - return semncnt; -} - -static int count_semzcnt(struct sem_array *sma, ushort semnum) -{ - int semzcnt; - struct sem_queue *q; + semcnt = 0; + /* First: check the simple operations. They are easy to evaluate */ + if (count_zero) + l = &sma->sem_base[semnum].pending_const; + else + l = &sma->sem_base[semnum].pending_alter; - semzcnt = 0; - list_for_each_entry(q, &sma->sem_base[semnum].pending_const, list) { - struct sembuf *sops = q->sops; - BUG_ON(sops->sem_num != semnum); - if ((sops->sem_op == 0) && !(sops->sem_flg & IPC_NOWAIT)) - semzcnt++; + list_for_each_entry(q, l, list) { + /* all task on a per-semaphore list sleep on exactly + * that semaphore + */ + semcnt++; } - list_for_each_entry(q, &sma->pending_const, list) { - struct sembuf *sops = q->sops; - int nsops = q->nsops; - int i; - for (i = 0; i < nsops; i++) - if (sops[i].sem_num == semnum - && (sops[i].sem_op == 0) - && !(sops[i].sem_flg & IPC_NOWAIT)) - semzcnt++; - } + /* Then: check the complex operations. */ list_for_each_entry(q, &sma->pending_alter, list) { - struct sembuf *sops = q->sops; - int nsops = q->nsops; - int i; - for (i = 0; i < nsops; i++) - if (sops[i].sem_num == semnum - && (sops[i].sem_op == 0) - && !(sops[i].sem_flg & IPC_NOWAIT)) - semzcnt++; + semcnt += check_qop(sma, semnum, q, count_zero); + } + if (count_zero) { + list_for_each_entry(q, &sma->pending_const, list) { + semcnt += check_qop(sma, semnum, q, count_zero); + } } - return semzcnt; + return semcnt; } /* Free a semaphore set. freeary() is called with sem_ids.rwsem locked @@ -1459,10 +1454,10 @@ static int semctl_main(struct ipc_namespace *ns, int semid, int semnum, err = curr->sempid; goto out_unlock; case GETNCNT: - err = count_semncnt(sma, semnum); + err = count_semcnt(sma, semnum, 0); goto out_unlock; case GETZCNT: - err = count_semzcnt(sma, semnum); + err = count_semcnt(sma, semnum, 1); goto out_unlock; } -- cgit v1.2.3 From d198cd6d6d02d0a335af2deacb60816ebb4719d1 Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Fri, 6 Jun 2014 14:37:49 -0700 Subject: ipc/sem.c: change perform_atomic_semop parameters Right now, perform_atomic_semop gets the content of sem_queue as individual fields. Changes that, instead pass a pointer to sem_queue. This is a preparation for the next patch: it uses sem_queue to store the reason why a task must sleep. Signed-off-by: Manfred Spraul Cc: Davidlohr Bueso Cc: Michael Kerrisk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/sem.c | 38 +++++++++++++++++++------------------- 1 file changed, 19 insertions(+), 19 deletions(-) diff --git a/ipc/sem.c b/ipc/sem.c index d73b3eff80f0..b93b561842cd 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -585,21 +585,23 @@ SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg) /** * perform_atomic_semop - Perform (if possible) a semaphore operation * @sma: semaphore array - * @sops: array with operations that should be checked - * @nsops: number of operations - * @un: undo array - * @pid: pid that did the change + * @q: struct sem_queue that describes the operation * * Returns 0 if the operation was possible. * Returns 1 if the operation is impossible, the caller must sleep. * Negative values are error codes. */ -static int perform_atomic_semop(struct sem_array *sma, struct sembuf *sops, - int nsops, struct sem_undo *un, int pid) +static int perform_atomic_semop(struct sem_array *sma, struct sem_queue *q) { - int result, sem_op; + int result, sem_op, nsops, pid; struct sembuf *sop; struct sem *curr; + struct sembuf *sops; + struct sem_undo *un; + + sops = q->sops; + nsops = q->nsops; + un = q->undo; for (sop = sops; sop < sops + nsops; sop++) { curr = sma->sem_base + sop->sem_num; @@ -627,6 +629,7 @@ static int perform_atomic_semop(struct sem_array *sma, struct sembuf *sops, } sop--; + pid = q->pid; while (sop >= sops) { sma->sem_base[sop->sem_num].sempid = pid; sop--; @@ -779,8 +782,7 @@ static int wake_const_ops(struct sem_array *sma, int semnum, q = container_of(walk, struct sem_queue, list); walk = walk->next; - error = perform_atomic_semop(sma, q->sops, q->nsops, - q->undo, q->pid); + error = perform_atomic_semop(sma, q); if (error <= 0) { /* operation completed, remove from queue & wakeup */ @@ -892,8 +894,7 @@ again: if (semnum != -1 && sma->sem_base[semnum].semval == 0) break; - error = perform_atomic_semop(sma, q->sops, q->nsops, - q->undo, q->pid); + error = perform_atomic_semop(sma, q); /* Does q->sleeper still need to sleep? */ if (error > 0) @@ -1871,8 +1872,13 @@ SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsops, if (un && un->semid == -1) goto out_unlock_free; - error = perform_atomic_semop(sma, sops, nsops, un, - task_tgid_vnr(current)); + queue.sops = sops; + queue.nsops = nsops; + queue.undo = un; + queue.pid = task_tgid_vnr(current); + queue.alter = alter; + + error = perform_atomic_semop(sma, &queue); if (error == 0) { /* If the operation was successful, then do * the required updates. @@ -1889,12 +1895,6 @@ SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsops, * task into the pending queue and go to sleep. */ - queue.sops = sops; - queue.nsops = nsops; - queue.undo = un; - queue.pid = task_tgid_vnr(current); - queue.alter = alter; - if (nsops == 1) { struct sem *curr; curr = &sma->sem_base[sops->sem_num]; -- cgit v1.2.3 From ed247b7ca0d20b4528eec362f8435594818d7601 Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Fri, 6 Jun 2014 14:37:49 -0700 Subject: ipc/sem.c: store which operation blocks in perform_atomic_semop() Preparation for the next patch: In the slow-path of perform_atomic_semop(), store a pointer to the operation that caused the operation to block. Signed-off-by: Manfred Spraul Cc: Davidlohr Bueso Cc: Michael Kerrisk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/sem.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/ipc/sem.c b/ipc/sem.c index b93b561842cd..d61362b31f1e 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -109,6 +109,7 @@ struct sem_queue { int pid; /* process id of requesting process */ int status; /* completion status of operation */ struct sembuf *sops; /* array of pending operations */ + struct sembuf *blocking; /* the operation that blocked */ int nsops; /* number of operations */ int alter; /* does *sops alter the array? */ }; @@ -642,6 +643,8 @@ out_of_range: goto undo; would_block: + q->blocking = sop; + if (sop->sem_flg & IPC_NOWAIT) result = -EAGAIN; else -- cgit v1.2.3 From b220c57aeccf903ec6550b30c52cc0248ddb26bf Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Fri, 6 Jun 2014 14:37:51 -0700 Subject: ipc/sem.c: make semctl(,,{GETNCNT,GETZCNT}) standard compliant SUSv4 clearly defines how semncnt and semzcnt must be calculated: A task waits on exactly one semaphore: The semaphore from the first operation in the sop array that cannot proceed. The Linux implementation never followed the standard, it tried to count all semaphores that might be the reason why a task sleeps. This patch fixes that. Note: a) The implementation assumes that GETNCNT and GETZCNT are rare operations, therefore the code counts them only on demand. (If they wouldn't be rare, then the non-compliance would have been found earlier) b) compared to the initial version of the patch, the BUG_ONs were removed and it was clarified that the new behavior conforms to SUS. Back-compatibility concerns: Manfred: : - there is no application in Fedora that uses GETNCNT or GETZCNT. : : - application that use only single-sop semop() are also safe, the : difference only affects complex apps. : : - portable application are also safe, the new behavior is standard : compliant. : : But that's it. The old behavior existed in Linux from 0.99.something : until now. Michael: : * These operations seem to be very little used. Grepping the public : source that is contained Fedora 20 source DVD, there appear to be no : uses. Of course, this says nothing about uses in private / : non-mainstream FOSS code, but it seems likely that the same pattern : is followed there. : : * The existing behavior is hard enough to understand that I suspect : that no one understood it well enough to rely on it anyway : (especially as that behavior contradicted both man page and POSIX). : : So, there's a chance of breakage, but I estimate that it's minute. Signed-off-by: Manfred Spraul Cc: Davidlohr Bueso Cc: Michael Kerrisk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/sem.c | 34 +++++++++++++--------------------- 1 file changed, 13 insertions(+), 21 deletions(-) diff --git a/ipc/sem.c b/ipc/sem.c index d61362b31f1e..910c7a3865c8 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -993,38 +993,30 @@ static void do_smart_update(struct sem_array *sma, struct sembuf *sops, int nsop } /* - * check_qop: Test how often a queued operation sleeps on the semaphore semnum + * check_qop: Test if a queued operation sleeps on the semaphore semnum */ static int check_qop(struct sem_array *sma, int semnum, struct sem_queue *q, bool count_zero) { - struct sembuf *sops = q->sops; - int nsops = q->nsops; - int i, semcnt; + struct sembuf *sop = q->blocking; - semcnt = 0; + if (sop->sem_num != semnum) + return 0; - for (i = 0; i < nsops; i++) { - if (sops[i].sem_num != semnum) - continue; - if (sops[i].sem_flg & IPC_NOWAIT) - continue; - if (count_zero && sops[i].sem_op == 0) - semcnt++; - if (!count_zero && sops[i].sem_op < 0) - semcnt++; - } - return semcnt; + if (count_zero && sop->sem_op == 0) + return 1; + if (!count_zero && sop->sem_op < 0) + return 1; + + return 0; } /* The following counts are associated to each semaphore: * semncnt number of tasks waiting on semval being nonzero * semzcnt number of tasks waiting on semval being zero - * This model assumes that a task waits on exactly one semaphore. - * Since semaphore operations are to be performed atomically, tasks actually - * wait on a whole sequence of semaphores simultaneously. - * The counts we return here are a rough approximation, but still - * warrant that semncnt+semzcnt>0 if the task is on the pending queue. + * + * Per definition, a task waits only on the semaphore of the first semop + * that cannot proceed, even if additional operation would block, too. */ static int count_semcnt(struct sem_array *sma, ushort semnum, bool count_zero) -- cgit v1.2.3 From 9b44ee2eef124885d407a5f59bbd7a72634a05ba Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Fri, 6 Jun 2014 14:37:52 -0700 Subject: ipc/sem.c: add a printk_once for semctl(GETNCNT/GETZCNT) The actual Linux implementation for semctl(GETNCNT) and semctl(GETZCNT) always (since 0.99.10) reported a thread as sleeping on all semaphores that are listed in the semop() call. The documented behavior (both in the Linux man page and in the Single Unix Specification) is that a task should be reported on exactly one semaphore: The semaphore that caused the thread to got to sleep. This patch adds a pr_info_once() that is triggered if a thread hits the relevant case. The code triggers slightly too often, otherwise it would be necessary to replicate the old code. As there are no known users of GETNCNT or GETZCNT, this is done to prevent unnecessary bloat. The task that triggered is reported with name (tsk->comm) and pid. Signed-off-by: Manfred Spraul Acked-by: Davidlohr Bueso Cc: Michael Kerrisk Cc: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/sem.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/ipc/sem.c b/ipc/sem.c index 910c7a3865c8..454f6c6020a8 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -1000,6 +1000,17 @@ static int check_qop(struct sem_array *sma, int semnum, struct sem_queue *q, { struct sembuf *sop = q->blocking; + /* + * Linux always (since 0.99.10) reported a task as sleeping on all + * semaphores. This violates SUS, therefore it was changed to the + * standard compliant behavior. + * Give the administrators a chance to notice that an application + * might misbehave because it relies on the Linux behavior. + */ + pr_info_once("semctl(GETNCNT/GETZCNT) is since 3.16 Single Unix Specification compliant.\n" + "The task %s (%d) triggered the difference, watch for misbehavior.\n", + current->comm, task_pid_nr(current)); + if (sop->sem_num != semnum) return 0; -- cgit v1.2.3 From 119ce5c8b99cd6b874cec58c81ce9b56e52160c3 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:37:53 -0700 Subject: kernel/seccomp.c: kernel-doc warning fix + fix small typo Signed-off-by: Fabian Frederick Cc: "David S. Miller" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/seccomp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/seccomp.c b/kernel/seccomp.c index b35c21503a36..f6d76bebe69f 100644 --- a/kernel/seccomp.c +++ b/kernel/seccomp.c @@ -39,7 +39,7 @@ * is only needed for handling filters shared across tasks. * @prev: points to a previously installed, or inherited, filter * @len: the number of instructions in the program - * @insns: the BPF program instructions to evaluate + * @insnsi: the BPF program instructions to evaluate * * seccomp_filter objects are organized in a tree linked via the @prev * pointer. For any task, it appears to be a singly-linked list starting @@ -220,7 +220,7 @@ static long seccomp_attach_filter(struct sock_fprog *fprog) return -ENOMEM; /* - * Installing a seccomp filter requires that the task have + * Installing a seccomp filter requires that the task has * CAP_SYS_ADMIN in its namespace or be running with no_new_privs. * This avoids scenarios where unprivileged tasks can affect the * behavior of privileged children. -- cgit v1.2.3 From 37649de2390b0c6668c6621e0a69d59c7d23022f Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:37:54 -0700 Subject: arm: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arm/kernel/isa.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/kernel/isa.c b/arch/arm/kernel/isa.c index 346485910732..9d1cf7156895 100644 --- a/arch/arm/kernel/isa.c +++ b/arch/arm/kernel/isa.c @@ -20,7 +20,7 @@ static unsigned int isa_membase, isa_portbase, isa_portshift; -static ctl_table ctl_isa_vars[4] = { +static struct ctl_table ctl_isa_vars[4] = { { .procname = "membase", .data = &isa_membase, @@ -44,7 +44,7 @@ static ctl_table ctl_isa_vars[4] = { static struct ctl_table_header *isa_sysctl_header; -static ctl_table ctl_isa[2] = { +static struct ctl_table ctl_isa[2] = { { .procname = "isa", .mode = 0555, @@ -52,7 +52,7 @@ static ctl_table ctl_isa[2] = { }, {} }; -static ctl_table ctl_bus[2] = { +static struct ctl_table ctl_bus[2] = { { .procname = "bus", .mode = 0555, -- cgit v1.2.3 From 2841efa6362cdcd82934dd9482ba4981ad5cc790 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:37:55 -0700 Subject: ia64: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/ia64/kernel/crash.c | 4 ++-- arch/ia64/kernel/perfmon.c | 6 +++--- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/ia64/kernel/crash.c b/arch/ia64/kernel/crash.c index b942f4032d7a..2955f359e2a7 100644 --- a/arch/ia64/kernel/crash.c +++ b/arch/ia64/kernel/crash.c @@ -237,7 +237,7 @@ kdump_init_notifier(struct notifier_block *self, unsigned long val, void *data) } #ifdef CONFIG_SYSCTL -static ctl_table kdump_ctl_table[] = { +static struct ctl_table kdump_ctl_table[] = { { .procname = "kdump_on_init", .data = &kdump_on_init, @@ -255,7 +255,7 @@ static ctl_table kdump_ctl_table[] = { { } }; -static ctl_table sys_table[] = { +static struct ctl_table sys_table[] = { { .procname = "kernel", .mode = 0555, diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c index d841c4bd6864..5845ffea67c3 100644 --- a/arch/ia64/kernel/perfmon.c +++ b/arch/ia64/kernel/perfmon.c @@ -521,7 +521,7 @@ static pmu_config_t *pmu_conf; pfm_sysctl_t pfm_sysctl; EXPORT_SYMBOL(pfm_sysctl); -static ctl_table pfm_ctl_table[]={ +static struct ctl_table pfm_ctl_table[] = { { .procname = "debug", .data = &pfm_sysctl.debug, @@ -552,7 +552,7 @@ static ctl_table pfm_ctl_table[]={ }, {} }; -static ctl_table pfm_sysctl_dir[] = { +static struct ctl_table pfm_sysctl_dir[] = { { .procname = "perfmon", .mode = 0555, @@ -560,7 +560,7 @@ static ctl_table pfm_sysctl_dir[] = { }, {} }; -static ctl_table pfm_sysctl_root[] = { +static struct ctl_table pfm_sysctl_root[] = { { .procname = "kernel", .mode = 0555, -- cgit v1.2.3 From 804bcaf79b01e9632b9e405c94fe3ea252744eae Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:37:56 -0700 Subject: tile: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/tile/kernel/proc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/tile/kernel/proc.c b/arch/tile/kernel/proc.c index 681100c59fda..6829a9508649 100644 --- a/arch/tile/kernel/proc.c +++ b/arch/tile/kernel/proc.c @@ -113,7 +113,7 @@ arch_initcall(proc_tile_init); * Support /proc/sys/tile directory */ -static ctl_table unaligned_subtable[] = { +static struct ctl_table unaligned_subtable[] = { { .procname = "enabled", .data = &unaligned_fixup, @@ -138,7 +138,7 @@ static ctl_table unaligned_subtable[] = { {} }; -static ctl_table unaligned_table[] = { +static struct ctl_table unaligned_table[] = { { .procname = "unaligned_fixup", .mode = 0555, -- cgit v1.2.3 From 90a3b89e00658b2c552762b5a0809ba823e99a4e Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:37:57 -0700 Subject: cdrom: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/cdrom/cdrom.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c index 49ac5662585b..2a44767891f5 100644 --- a/drivers/cdrom/cdrom.c +++ b/drivers/cdrom/cdrom.c @@ -3470,7 +3470,7 @@ static int cdrom_print_info(const char *header, int val, char *info, return 0; } -static int cdrom_sysctl_info(ctl_table *ctl, int write, +static int cdrom_sysctl_info(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { int pos; @@ -3583,7 +3583,7 @@ static void cdrom_update_settings(void) mutex_unlock(&cdrom_mutex); } -static int cdrom_sysctl_handler(ctl_table *ctl, int write, +static int cdrom_sysctl_handler(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { int ret; @@ -3609,7 +3609,7 @@ static int cdrom_sysctl_handler(ctl_table *ctl, int write, } /* Place files in /proc/sys/dev/cdrom */ -static ctl_table cdrom_table[] = { +static struct ctl_table cdrom_table[] = { { .procname = "info", .data = &cdrom_sysctl_settings.info, @@ -3655,7 +3655,7 @@ static ctl_table cdrom_table[] = { { } }; -static ctl_table cdrom_cdrom_table[] = { +static struct ctl_table cdrom_cdrom_table[] = { { .procname = "cdrom", .maxlen = 0, @@ -3666,7 +3666,7 @@ static ctl_table cdrom_cdrom_table[] = { }; /* Make sure that /proc/sys/dev is there */ -static ctl_table cdrom_root_table[] = { +static struct ctl_table cdrom_root_table[] = { { .procname = "dev", .maxlen = 0, -- cgit v1.2.3 From 5eb10d912ea0add5c15b0df1920ddd1681f0c9fb Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:37:58 -0700 Subject: random: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/random.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/char/random.c b/drivers/char/random.c index 06cea7ff3a7c..4ad71ef2cd59 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -1582,10 +1582,10 @@ static int proc_do_uuid(struct ctl_table *table, int write, /* * Return entropy available scaled to integral bits */ -static int proc_do_entropy(ctl_table *table, int write, +static int proc_do_entropy(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { - ctl_table fake_table; + struct ctl_table fake_table; int entropy_count; entropy_count = *(int *)table->data >> ENTROPY_SHIFT; -- cgit v1.2.3 From be424c63aafb58cf07be8037355304a17a07f842 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:37:58 -0700 Subject: parport: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/parport/procfs.c | 58 ++++++++++++++++++++++++------------------------ 1 file changed, 29 insertions(+), 29 deletions(-) diff --git a/drivers/parport/procfs.c b/drivers/parport/procfs.c index 92ed045a5f93..3b470801a04f 100644 --- a/drivers/parport/procfs.c +++ b/drivers/parport/procfs.c @@ -31,7 +31,7 @@ #define PARPORT_MIN_SPINTIME_VALUE 1 #define PARPORT_MAX_SPINTIME_VALUE 1000 -static int do_active_device(ctl_table *table, int write, +static int do_active_device(struct ctl_table *table, int write, void __user *result, size_t *lenp, loff_t *ppos) { struct parport *port = (struct parport *)table->extra1; @@ -68,7 +68,7 @@ static int do_active_device(ctl_table *table, int write, } #ifdef CONFIG_PARPORT_1284 -static int do_autoprobe(ctl_table *table, int write, +static int do_autoprobe(struct ctl_table *table, int write, void __user *result, size_t *lenp, loff_t *ppos) { struct parport_device_info *info = table->extra2; @@ -110,9 +110,9 @@ static int do_autoprobe(ctl_table *table, int write, } #endif /* IEEE1284.3 support. */ -static int do_hardware_base_addr (ctl_table *table, int write, - void __user *result, - size_t *lenp, loff_t *ppos) +static int do_hardware_base_addr(struct ctl_table *table, int write, + void __user *result, + size_t *lenp, loff_t *ppos) { struct parport *port = (struct parport *)table->extra1; char buffer[20]; @@ -138,9 +138,9 @@ static int do_hardware_base_addr (ctl_table *table, int write, return copy_to_user(result, buffer, len) ? -EFAULT : 0; } -static int do_hardware_irq (ctl_table *table, int write, - void __user *result, - size_t *lenp, loff_t *ppos) +static int do_hardware_irq(struct ctl_table *table, int write, + void __user *result, + size_t *lenp, loff_t *ppos) { struct parport *port = (struct parport *)table->extra1; char buffer[20]; @@ -166,9 +166,9 @@ static int do_hardware_irq (ctl_table *table, int write, return copy_to_user(result, buffer, len) ? -EFAULT : 0; } -static int do_hardware_dma (ctl_table *table, int write, - void __user *result, - size_t *lenp, loff_t *ppos) +static int do_hardware_dma(struct ctl_table *table, int write, + void __user *result, + size_t *lenp, loff_t *ppos) { struct parport *port = (struct parport *)table->extra1; char buffer[20]; @@ -194,9 +194,9 @@ static int do_hardware_dma (ctl_table *table, int write, return copy_to_user(result, buffer, len) ? -EFAULT : 0; } -static int do_hardware_modes (ctl_table *table, int write, - void __user *result, - size_t *lenp, loff_t *ppos) +static int do_hardware_modes(struct ctl_table *table, int write, + void __user *result, + size_t *lenp, loff_t *ppos) { struct parport *port = (struct parport *)table->extra1; char buffer[40]; @@ -255,11 +255,11 @@ PARPORT_MAX_SPINTIME_VALUE; struct parport_sysctl_table { struct ctl_table_header *sysctl_header; - ctl_table vars[12]; - ctl_table device_dir[2]; - ctl_table port_dir[2]; - ctl_table parport_dir[2]; - ctl_table dev_dir[2]; + struct ctl_table vars[12]; + struct ctl_table device_dir[2]; + struct ctl_table port_dir[2]; + struct ctl_table parport_dir[2]; + struct ctl_table dev_dir[2]; }; static const struct parport_sysctl_table parport_sysctl_template = { @@ -369,12 +369,12 @@ static const struct parport_sysctl_table parport_sysctl_template = { struct parport_device_sysctl_table { struct ctl_table_header *sysctl_header; - ctl_table vars[2]; - ctl_table device_dir[2]; - ctl_table devices_root_dir[2]; - ctl_table port_dir[2]; - ctl_table parport_dir[2]; - ctl_table dev_dir[2]; + struct ctl_table vars[2]; + struct ctl_table device_dir[2]; + struct ctl_table devices_root_dir[2]; + struct ctl_table port_dir[2]; + struct ctl_table parport_dir[2]; + struct ctl_table dev_dir[2]; }; static const struct parport_device_sysctl_table @@ -422,10 +422,10 @@ parport_device_sysctl_template = { struct parport_default_sysctl_table { struct ctl_table_header *sysctl_header; - ctl_table vars[3]; - ctl_table default_dir[2]; - ctl_table parport_dir[2]; - ctl_table dev_dir[2]; + struct ctl_table vars[3]; + struct ctl_table default_dir[2]; + struct ctl_table parport_dir[2]; + struct ctl_table dev_dir[2]; }; static struct parport_default_sysctl_table -- cgit v1.2.3 From 592749e4d05fb6ea5ea75368aa6d2858cc0637c3 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:37:59 -0700 Subject: scsi: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/scsi/scsi_sysctl.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/scsi_sysctl.c b/drivers/scsi/scsi_sysctl.c index 2b6b93f7d8ef..546f16299ef9 100644 --- a/drivers/scsi/scsi_sysctl.c +++ b/drivers/scsi/scsi_sysctl.c @@ -12,7 +12,7 @@ #include "scsi_priv.h" -static ctl_table scsi_table[] = { +static struct ctl_table scsi_table[] = { { .procname = "logging_level", .data = &scsi_logging_level, .maxlen = sizeof(scsi_logging_level), @@ -21,14 +21,14 @@ static ctl_table scsi_table[] = { { } }; -static ctl_table scsi_dir_table[] = { +static struct ctl_table scsi_dir_table[] = { { .procname = "scsi", .mode = 0555, .child = scsi_table }, { } }; -static ctl_table scsi_root_table[] = { +static struct ctl_table scsi_root_table[] = { { .procname = "dev", .mode = 0555, .child = scsi_dir_table }, -- cgit v1.2.3 From a88bbbeef69daa4a9eebe656bd53ad8f8e657646 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:38:00 -0700 Subject: coda: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/coda/sysctl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/coda/sysctl.c b/fs/coda/sysctl.c index af56ad56a89a..34218a8a28cd 100644 --- a/fs/coda/sysctl.c +++ b/fs/coda/sysctl.c @@ -14,7 +14,7 @@ #ifdef CONFIG_SYSCTL static struct ctl_table_header *fs_table_header; -static ctl_table coda_table[] = { +static struct ctl_table coda_table[] = { { .procname = "timeout", .data = &coda_timeout, @@ -39,7 +39,7 @@ static ctl_table coda_table[] = { {} }; -static ctl_table fs_table[] = { +static struct ctl_table fs_table[] = { { .procname = "coda", .mode = 0555, -- cgit v1.2.3 From 75a3294ec51c091c6d848afd9c031ef31d436ae1 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:38:01 -0700 Subject: fscache: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/fscache/main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/fscache/main.c b/fs/fscache/main.c index acd4bf1fc277..63f868e869b9 100644 --- a/fs/fscache/main.c +++ b/fs/fscache/main.c @@ -67,7 +67,7 @@ static int fscache_max_active_sysctl(struct ctl_table *table, int write, return ret; } -ctl_table fscache_sysctls[] = { +struct ctl_table fscache_sysctls[] = { { .procname = "object_max_active", .data = &fscache_object_max_active, @@ -87,7 +87,7 @@ ctl_table fscache_sysctls[] = { {} }; -ctl_table fscache_sysctls_root[] = { +struct ctl_table fscache_sysctls_root[] = { { .procname = "fscache", .mode = 0555, -- cgit v1.2.3 From 7ac9fe571d96a3c5b19d9374cf5c4e445a8690df Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:38:02 -0700 Subject: lockd: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/lockd/svc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c index 6bf06a07f3e0..de051cb1f553 100644 --- a/fs/lockd/svc.c +++ b/fs/lockd/svc.c @@ -436,7 +436,7 @@ EXPORT_SYMBOL_GPL(lockd_down); * Sysctl parameters (same as module parameters, different interface). */ -static ctl_table nlm_sysctls[] = { +static struct ctl_table nlm_sysctls[] = { { .procname = "nlm_grace_period", .data = &nlm_grace_period, @@ -490,7 +490,7 @@ static ctl_table nlm_sysctls[] = { { } }; -static ctl_table nlm_sysctl_dir[] = { +static struct ctl_table nlm_sysctl_dir[] = { { .procname = "nfs", .mode = 0555, @@ -499,7 +499,7 @@ static ctl_table nlm_sysctl_dir[] = { { } }; -static ctl_table nlm_sysctl_root[] = { +static struct ctl_table nlm_sysctl_root[] = { { .procname = "fs", .mode = 0555, -- cgit v1.2.3 From f5102e5630d61a992d18a0250cae6e2c85856b8d Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:38:03 -0700 Subject: nfs: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/nfs/nfs4sysctl.c | 6 +++--- fs/nfs/sysctl.c | 6 +++--- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/fs/nfs/nfs4sysctl.c b/fs/nfs/nfs4sysctl.c index 2628d921b7e3..b6ebe7e445f6 100644 --- a/fs/nfs/nfs4sysctl.c +++ b/fs/nfs/nfs4sysctl.c @@ -16,7 +16,7 @@ static const int nfs_set_port_min = 0; static const int nfs_set_port_max = 65535; static struct ctl_table_header *nfs4_callback_sysctl_table; -static ctl_table nfs4_cb_sysctls[] = { +static struct ctl_table nfs4_cb_sysctls[] = { { .procname = "nfs_callback_tcpport", .data = &nfs_callback_set_tcpport, @@ -36,7 +36,7 @@ static ctl_table nfs4_cb_sysctls[] = { { } }; -static ctl_table nfs4_cb_sysctl_dir[] = { +static struct ctl_table nfs4_cb_sysctl_dir[] = { { .procname = "nfs", .mode = 0555, @@ -45,7 +45,7 @@ static ctl_table nfs4_cb_sysctl_dir[] = { { } }; -static ctl_table nfs4_cb_sysctl_root[] = { +static struct ctl_table nfs4_cb_sysctl_root[] = { { .procname = "fs", .mode = 0555, diff --git a/fs/nfs/sysctl.c b/fs/nfs/sysctl.c index 6b3f2535a3ec..bb6ed810fa6f 100644 --- a/fs/nfs/sysctl.c +++ b/fs/nfs/sysctl.c @@ -13,7 +13,7 @@ static struct ctl_table_header *nfs_callback_sysctl_table; -static ctl_table nfs_cb_sysctls[] = { +static struct ctl_table nfs_cb_sysctls[] = { { .procname = "nfs_mountpoint_timeout", .data = &nfs_mountpoint_expiry_timeout, @@ -31,7 +31,7 @@ static ctl_table nfs_cb_sysctls[] = { { } }; -static ctl_table nfs_cb_sysctl_dir[] = { +static struct ctl_table nfs_cb_sysctl_dir[] = { { .procname = "nfs", .mode = 0555, @@ -40,7 +40,7 @@ static ctl_table nfs_cb_sysctl_dir[] = { { } }; -static ctl_table nfs_cb_sysctl_root[] = { +static struct ctl_table nfs_cb_sysctl_root[] = { { .procname = "fs", .mode = 0555, -- cgit v1.2.3 From 92f778dd5d2d3a7619c09d04a59fe10bfb19774e Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:38:04 -0700 Subject: inotify: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/notify/inotify/inotify_user.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c index 78a2ca3966c3..cc423a30a0c8 100644 --- a/fs/notify/inotify/inotify_user.c +++ b/fs/notify/inotify/inotify_user.c @@ -57,7 +57,7 @@ static struct kmem_cache *inotify_inode_mark_cachep __read_mostly; static int zero; -ctl_table inotify_table[] = { +struct ctl_table inotify_table[] = { { .procname = "max_user_instances", .data = &inotify_max_user_instances, -- cgit v1.2.3 From 5eccdf3954411bf168676e4edb04d16f9f1d8fd2 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:38:04 -0700 Subject: ntfs: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ntfs/sysctl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/ntfs/sysctl.c b/fs/ntfs/sysctl.c index 1927170a35ce..a503156ec15f 100644 --- a/fs/ntfs/sysctl.c +++ b/fs/ntfs/sysctl.c @@ -34,7 +34,7 @@ #include "debug.h" /* Definition of the ntfs sysctl. */ -static ctl_table ntfs_sysctls[] = { +static struct ctl_table ntfs_sysctls[] = { { .procname = "ntfs-debug", .data = &debug_msgs, /* Data pointer and size. */ @@ -46,7 +46,7 @@ static ctl_table ntfs_sysctls[] = { }; /* Define the parent directory /proc/sys/fs. */ -static ctl_table sysctls_root[] = { +static struct ctl_table sysctls_root[] = { { .procname = "fs", .mode = 0555, -- cgit v1.2.3 From 1f7e0616cd4f5df594595153c3a01bbb16072380 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:38:05 -0700 Subject: fs: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/dcache.c | 2 +- fs/drop_caches.c | 2 +- fs/eventpoll.c | 2 +- fs/file_table.c | 4 ++-- fs/inode.c | 2 +- 5 files changed, 6 insertions(+), 6 deletions(-) diff --git a/fs/dcache.c b/fs/dcache.c index be2bea834bf4..1792d6075b4f 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -150,7 +150,7 @@ static long get_nr_dentry_unused(void) return sum < 0 ? 0 : sum; } -int proc_nr_dentry(ctl_table *table, int write, void __user *buffer, +int proc_nr_dentry(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { dentry_stat.nr_dentry = get_nr_dentry(); diff --git a/fs/drop_caches.c b/fs/drop_caches.c index 9280202e488c..1de7294aad20 100644 --- a/fs/drop_caches.c +++ b/fs/drop_caches.c @@ -50,7 +50,7 @@ static void drop_slab(void) } while (nr_objects > 10); } -int drop_caches_sysctl_handler(ctl_table *table, int write, +int drop_caches_sysctl_handler(struct ctl_table *table, int write, void __user *buffer, size_t *length, loff_t *ppos) { int ret; diff --git a/fs/eventpoll.c b/fs/eventpoll.c index af903128891c..b73e0621ce9e 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -293,7 +293,7 @@ static LIST_HEAD(tfile_check_list); static long zero; static long long_max = LONG_MAX; -ctl_table epoll_table[] = { +struct ctl_table epoll_table[] = { { .procname = "max_user_watches", .data = &max_user_watches, diff --git a/fs/file_table.c b/fs/file_table.c index a374f5033e97..40bf4660f0a3 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -76,14 +76,14 @@ EXPORT_SYMBOL_GPL(get_max_files); * Handle nr_files sysctl */ #if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS) -int proc_nr_files(ctl_table *table, int write, +int proc_nr_files(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { files_stat.nr_files = get_nr_files(); return proc_doulongvec_minmax(table, write, buffer, lenp, ppos); } #else -int proc_nr_files(ctl_table *table, int write, +int proc_nr_files(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; diff --git a/fs/inode.c b/fs/inode.c index f96d2a6f88cc..2feb9b69f1be 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -105,7 +105,7 @@ long get_nr_dirty_inodes(void) * Handle nr_inode sysctl */ #ifdef CONFIG_SYSCTL -int proc_nr_inodes(ctl_table *table, int write, +int proc_nr_inodes(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { inodes_stat.nr_inodes = get_nr_inodes(); -- cgit v1.2.3 From d6f50c95e0e44fa722852ae24aa51d4b7f0d56ed Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:38:06 -0700 Subject: key: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/key.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/key.h b/include/linux/key.h index 80d677483e31..3ae45f09589b 100644 --- a/include/linux/key.h +++ b/include/linux/key.h @@ -332,7 +332,7 @@ do { \ } while (0) #ifdef CONFIG_SYSCTL -extern ctl_table key_sysctls[]; +extern struct ctl_table key_sysctls[]; #endif /* * the userspace interface -- cgit v1.2.3 From a5c5928b759d8c7382cccc7be36769a68046cc58 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:38:07 -0700 Subject: ipc: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/ipc_sysctl.c | 14 +++++++------- ipc/mq_sysctl.c | 12 ++++++------ 2 files changed, 13 insertions(+), 13 deletions(-) diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c index 998d31b230f1..c3f0326e98db 100644 --- a/ipc/ipc_sysctl.c +++ b/ipc/ipc_sysctl.c @@ -18,7 +18,7 @@ #include #include "util.h" -static void *get_ipc(ctl_table *table) +static void *get_ipc(struct ctl_table *table) { char *which = table->data; struct ipc_namespace *ipc_ns = current->nsproxy->ipc_ns; @@ -27,7 +27,7 @@ static void *get_ipc(ctl_table *table) } #ifdef CONFIG_PROC_SYSCTL -static int proc_ipc_dointvec(ctl_table *table, int write, +static int proc_ipc_dointvec(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table ipc_table; @@ -38,7 +38,7 @@ static int proc_ipc_dointvec(ctl_table *table, int write, return proc_dointvec(&ipc_table, write, buffer, lenp, ppos); } -static int proc_ipc_dointvec_minmax(ctl_table *table, int write, +static int proc_ipc_dointvec_minmax(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table ipc_table; @@ -49,7 +49,7 @@ static int proc_ipc_dointvec_minmax(ctl_table *table, int write, return proc_dointvec_minmax(&ipc_table, write, buffer, lenp, ppos); } -static int proc_ipc_dointvec_minmax_orphans(ctl_table *table, int write, +static int proc_ipc_dointvec_minmax_orphans(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { struct ipc_namespace *ns = current->nsproxy->ipc_ns; @@ -62,7 +62,7 @@ static int proc_ipc_dointvec_minmax_orphans(ctl_table *table, int write, return err; } -static int proc_ipc_callback_dointvec_minmax(ctl_table *table, int write, +static int proc_ipc_callback_dointvec_minmax(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table ipc_table; @@ -85,7 +85,7 @@ static int proc_ipc_callback_dointvec_minmax(ctl_table *table, int write, return rc; } -static int proc_ipc_doulongvec_minmax(ctl_table *table, int write, +static int proc_ipc_doulongvec_minmax(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table ipc_table; @@ -119,7 +119,7 @@ static void ipc_auto_callback(int val) } } -static int proc_ipcauto_dointvec_minmax(ctl_table *table, int write, +static int proc_ipcauto_dointvec_minmax(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table ipc_table; diff --git a/ipc/mq_sysctl.c b/ipc/mq_sysctl.c index 5bb8bfe67149..68d4e953762c 100644 --- a/ipc/mq_sysctl.c +++ b/ipc/mq_sysctl.c @@ -14,7 +14,7 @@ #include #ifdef CONFIG_PROC_SYSCTL -static void *get_mq(ctl_table *table) +static void *get_mq(struct ctl_table *table) { char *which = table->data; struct ipc_namespace *ipc_ns = current->nsproxy->ipc_ns; @@ -22,7 +22,7 @@ static void *get_mq(ctl_table *table) return which; } -static int proc_mq_dointvec(ctl_table *table, int write, +static int proc_mq_dointvec(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table mq_table; @@ -32,7 +32,7 @@ static int proc_mq_dointvec(ctl_table *table, int write, return proc_dointvec(&mq_table, write, buffer, lenp, ppos); } -static int proc_mq_dointvec_minmax(ctl_table *table, int write, +static int proc_mq_dointvec_minmax(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table mq_table; @@ -53,7 +53,7 @@ static int msg_max_limit_max = HARD_MSGMAX; static int msg_maxsize_limit_min = MIN_MSGSIZEMAX; static int msg_maxsize_limit_max = HARD_MSGSIZEMAX; -static ctl_table mq_sysctls[] = { +static struct ctl_table mq_sysctls[] = { { .procname = "queues_max", .data = &init_ipc_ns.mq_queues_max, @@ -100,7 +100,7 @@ static ctl_table mq_sysctls[] = { {} }; -static ctl_table mq_sysctl_dir[] = { +static struct ctl_table mq_sysctl_dir[] = { { .procname = "mqueue", .mode = 0555, @@ -109,7 +109,7 @@ static ctl_table mq_sysctl_dir[] = { {} }; -static ctl_table mq_sysctl_root[] = { +static struct ctl_table mq_sysctl_root[] = { { .procname = "fs", .mode = 0555, -- cgit v1.2.3 From 6f8fd1d77e64dd6be1075041cdfd8de4c2ca4e2b Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:38:08 -0700 Subject: sysctl: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/sysctl.c | 2 +- kernel/utsname_sysctl.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 7a910b9081e8..db19e3e2aa4b 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -202,7 +202,7 @@ static int proc_dostring_coredump(struct ctl_table *table, int write, /* Note: sysrq code uses it's own private copy */ static int __sysrq_enabled = CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE; -static int sysrq_sysctl_handler(ctl_table *table, int write, +static int sysrq_sysctl_handler(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c index 6fbe811c7ad1..c8eac43267e9 100644 --- a/kernel/utsname_sysctl.c +++ b/kernel/utsname_sysctl.c @@ -17,7 +17,7 @@ #ifdef CONFIG_PROC_SYSCTL -static void *get_uts(ctl_table *table, int write) +static void *get_uts(struct ctl_table *table, int write) { char *which = table->data; struct uts_namespace *uts_ns; @@ -32,7 +32,7 @@ static void *get_uts(ctl_table *table, int write) return which; } -static void put_uts(ctl_table *table, int write, void *which) +static void put_uts(struct ctl_table *table, int write, void *which) { if (!write) up_read(&uts_sem); @@ -44,7 +44,7 @@ static void put_uts(ctl_table *table, int write, void *which) * Special case of dostring for the UTS structure. This has locks * to observe. Should this be in kernel/sys.c ???? */ -static int proc_do_uts_string(ctl_table *table, int write, +static int proc_do_uts_string(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { struct ctl_table uts_table; -- cgit v1.2.3 From cccad5b983d2b0aa453879591ac4ab1c54ff9db6 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 6 Jun 2014 14:38:09 -0700 Subject: mm: convert use of typedef ctl_table to struct ctl_table This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page-writeback.c | 2 +- mm/page_alloc.c | 12 ++++++------ 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 533fa60c9ac1..7d9a4ef0a078 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -1664,7 +1664,7 @@ void throttle_vm_writeout(gfp_t gfp_mask) /* * sysctl handler for /proc/sys/vm/dirty_writeback_centisecs */ -int dirty_writeback_centisecs_handler(ctl_table *table, int write, +int dirty_writeback_centisecs_handler(struct ctl_table *table, int write, void __user *buffer, size_t *length, loff_t *ppos) { proc_dointvec(table, write, buffer, length, ppos); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index a59bdb653958..4f59fa29eda8 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3389,7 +3389,7 @@ early_param("numa_zonelist_order", setup_numa_zonelist_order); /* * sysctl handler for numa_zonelist_order */ -int numa_zonelist_order_handler(ctl_table *table, int write, +int numa_zonelist_order_handler(struct ctl_table *table, int write, void __user *buffer, size_t *length, loff_t *ppos) { @@ -5805,7 +5805,7 @@ module_init(init_per_zone_wmark_min) * that we can call two helper functions whenever min_free_kbytes * changes. */ -int min_free_kbytes_sysctl_handler(ctl_table *table, int write, +int min_free_kbytes_sysctl_handler(struct ctl_table *table, int write, void __user *buffer, size_t *length, loff_t *ppos) { int rc; @@ -5822,7 +5822,7 @@ int min_free_kbytes_sysctl_handler(ctl_table *table, int write, } #ifdef CONFIG_NUMA -int sysctl_min_unmapped_ratio_sysctl_handler(ctl_table *table, int write, +int sysctl_min_unmapped_ratio_sysctl_handler(struct ctl_table *table, int write, void __user *buffer, size_t *length, loff_t *ppos) { struct zone *zone; @@ -5838,7 +5838,7 @@ int sysctl_min_unmapped_ratio_sysctl_handler(ctl_table *table, int write, return 0; } -int sysctl_min_slab_ratio_sysctl_handler(ctl_table *table, int write, +int sysctl_min_slab_ratio_sysctl_handler(struct ctl_table *table, int write, void __user *buffer, size_t *length, loff_t *ppos) { struct zone *zone; @@ -5864,7 +5864,7 @@ int sysctl_min_slab_ratio_sysctl_handler(ctl_table *table, int write, * minimum watermarks. The lowmem reserve ratio can only make sense * if in function of the boot time zone sizes. */ -int lowmem_reserve_ratio_sysctl_handler(ctl_table *table, int write, +int lowmem_reserve_ratio_sysctl_handler(struct ctl_table *table, int write, void __user *buffer, size_t *length, loff_t *ppos) { proc_dointvec_minmax(table, write, buffer, length, ppos); @@ -5877,7 +5877,7 @@ int lowmem_reserve_ratio_sysctl_handler(ctl_table *table, int write, * cpu. It is the fraction of total pages in each zone that a hot per cpu * pagelist can have before it gets flushed back to buddy allocator. */ -int percpu_pagelist_fraction_sysctl_handler(ctl_table *table, int write, +int percpu_pagelist_fraction_sysctl_handler(struct ctl_table *table, int write, void __user *buffer, size_t *length, loff_t *ppos) { struct zone *zone; -- cgit v1.2.3 From b951242a4f633462b9766171bc5be8a8dc3f3e12 Mon Sep 17 00:00:00 2001 From: Davidlohr Bueso Date: Fri, 6 Jun 2014 14:38:10 -0700 Subject: blackfin/ptrace: call find_vma with the mmap_sem held Performing vma lookups without taking the mm->mmap_sem is asking for trouble. While doing the search, the vma in question can be modified or even removed before returning to the caller. Take the lock (shared) in order to avoid races while iterating through the vmacache and/or rbtree. Signed-off-by: Davidlohr Bueso Cc: Steven Miao Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/blackfin/kernel/ptrace.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c index e1f88e028cfe..8b8fe671b1a6 100644 --- a/arch/blackfin/kernel/ptrace.c +++ b/arch/blackfin/kernel/ptrace.c @@ -117,6 +117,7 @@ put_reg(struct task_struct *task, unsigned long regno, unsigned long data) int is_user_addr_valid(struct task_struct *child, unsigned long start, unsigned long len) { + bool valid; struct vm_area_struct *vma; struct sram_list_struct *sraml; @@ -124,9 +125,12 @@ is_user_addr_valid(struct task_struct *child, unsigned long start, unsigned long if (start + len < start) return -EIO; + down_read(&child->mm->mmap_sem); vma = find_vma(child->mm, start); - if (vma && start >= vma->vm_start && start + len <= vma->vm_end) - return 0; + valid = vma && start >= vma->vm_start && start + len <= vma->vm_end; + up_read(&child->mm->mmap_sem); + if (valid) + return 0; for (sraml = child->mm->context.sram_list; sraml; sraml = sraml->next) if (start >= (unsigned long)sraml->addr -- cgit v1.2.3 From ae0a50aba005acf35e94ef2a75baa29d26ba8eb0 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:38:11 -0700 Subject: fs/reiserfs/bitmap.c: coding style fixes -Trivial code clean-up -Fix endif }; (coccinelle warning) Signed-off-by: Fabian Frederick Cc: Jeff Mahoney Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/reiserfs/bitmap.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/fs/reiserfs/bitmap.c b/fs/reiserfs/bitmap.c index dc9a6829f7c6..1bcffeab713c 100644 --- a/fs/reiserfs/bitmap.c +++ b/fs/reiserfs/bitmap.c @@ -142,7 +142,6 @@ static int scan_bitmap_block(struct reiserfs_transaction_handle *th, int org = *beg; BUG_ON(!th->t_trans_id); - RFALSE(bmap_n >= reiserfs_bmap_count(s), "Bitmap %u is out of " "range (0..%u)", bmap_n, reiserfs_bmap_count(s) - 1); PROC_INFO_INC(s, scan_bitmap.bmap); @@ -321,7 +320,6 @@ static int scan_bitmap(struct reiserfs_transaction_handle *th, unsigned int off_max = s->s_blocksize << 3; BUG_ON(!th->t_trans_id); - PROC_INFO_INC(s, scan_bitmap.call); if (SB_FREE_BLOCKS(s) <= 0) return 0; // No point in looking for more free blocks @@ -388,9 +386,7 @@ static void _reiserfs_free_block(struct reiserfs_transaction_handle *th, unsigned int nr, offset; BUG_ON(!th->t_trans_id); - PROC_INFO_INC(s, free_block); - rs = SB_DISK_SUPER_BLOCK(s); sbh = SB_BUFFER_WITH_SB(s); apbi = SB_AP_BITMAP(s); @@ -435,8 +431,8 @@ void reiserfs_free_block(struct reiserfs_transaction_handle *th, int for_unformatted) { struct super_block *s = th->t_super; - BUG_ON(!th->t_trans_id); + BUG_ON(!th->t_trans_id); RFALSE(!s, "vs-4061: trying to free block on nonexistent device"); if (!is_reusable(s, block, 1)) return; @@ -471,6 +467,7 @@ static void __discard_prealloc(struct reiserfs_transaction_handle *th, unsigned long save = ei->i_prealloc_block; int dirty = 0; struct inode *inode = &ei->vfs_inode; + BUG_ON(!th->t_trans_id); #ifdef CONFIG_REISERFS_CHECK if (ei->i_prealloc_count < 0) @@ -494,6 +491,7 @@ void reiserfs_discard_prealloc(struct reiserfs_transaction_handle *th, struct inode *inode) { struct reiserfs_inode_info *ei = REISERFS_I(inode); + BUG_ON(!th->t_trans_id); if (ei->i_prealloc_count) __discard_prealloc(th, ei); @@ -504,7 +502,6 @@ void reiserfs_discard_all_prealloc(struct reiserfs_transaction_handle *th) struct list_head *plist = &SB_JOURNAL(th->t_super)->j_prealloc_list; BUG_ON(!th->t_trans_id); - while (!list_empty(plist)) { struct reiserfs_inode_info *ei; ei = list_entry(plist->next, struct reiserfs_inode_info, @@ -562,7 +559,7 @@ int reiserfs_parse_alloc_options(struct super_block *s, char *options) if (!strcmp(this_char, "displacing_new_packing_localities")) { SET_OPTION(displacing_new_packing_localities); continue; - }; + } if (!strcmp(this_char, "old_hashed_relocation")) { SET_OPTION(old_hashed_relocation); @@ -729,6 +726,7 @@ void show_alloc_options(struct seq_file *seq, struct super_block *s) static inline void new_hashed_relocation(reiserfs_blocknr_hint_t * hint) { char *hash_in; + if (hint->formatted_node) { hash_in = (char *)&hint->key.k_dir_id; } else { @@ -757,6 +755,7 @@ static void dirid_groups(reiserfs_blocknr_hint_t * hint) __u32 dirid = 0; int bm = 0; struct super_block *sb = hint->th->t_super; + if (hint->inode) dirid = le32_to_cpu(INODE_PKEY(hint->inode)->k_dir_id); else if (hint->formatted_node) -- cgit v1.2.3 From 310bf8f74927d0b945cd3e11dc5cef961ec04fd1 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:38:12 -0700 Subject: fs/reiserfs/stree.c: remove obsolete __constant __constant_cpu_to_le32 converted to cpu_to_le32 Signed-off-by: Fabian Frederick Cc: Jeff Mahoney Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/reiserfs/stree.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c index b14706a05d52..615cd9ab7940 100644 --- a/fs/reiserfs/stree.c +++ b/fs/reiserfs/stree.c @@ -228,10 +228,10 @@ const struct reiserfs_key MIN_KEY = { 0, 0, {{0, 0},} }; /* Maximal possible key. It is never in the tree. */ static const struct reiserfs_key MAX_KEY = { - __constant_cpu_to_le32(0xffffffff), - __constant_cpu_to_le32(0xffffffff), - {{__constant_cpu_to_le32(0xffffffff), - __constant_cpu_to_le32(0xffffffff)},} + cpu_to_le32(0xffffffff), + cpu_to_le32(0xffffffff), + {{cpu_to_le32(0xffffffff), + cpu_to_le32(0xffffffff)},} }; /* Get delimiting key of the buffer by looking for it in the buffers in the path, starting from the bottom -- cgit v1.2.3 From 984d74a72076a12b400339973e8c98fd2fcd90e5 Mon Sep 17 00:00:00 2001 From: Rik van Riel Date: Fri, 6 Jun 2014 14:38:13 -0700 Subject: sysrq: rcu-ify __handle_sysrq Echoing values into /proc/sysrq-trigger seems to be a popular way to get information out of the kernel. However, dumping information about thousands of processes, or hundreds of CPUs to serial console can result in IRQs being blocked for minutes, resulting in various kinds of cascade failures. The most common failure is due to interrupts being blocked for a very long time. This can lead to things like failed IO requests, and other things the system cannot easily recover from. This problem is easily fixable by making __handle_sysrq use RCU instead of spin_lock_irqsave. This leaves the warning that RCU grace periods have not elapsed for a long time, but the system will come back from that automatically. It also leaves sysrq-from-irq-context when the sysrq keys are pressed, but that is probably desired since people want that to work in situations where the system is already hosed. The callers of register_sysrq_key and unregister_sysrq_key appear to be capable of sleeping. Signed-off-by: Rik van Riel Reported-by: Madper Xie Cc: Randy Dunlap Cc: Richard Weinberger Cc: Paul E. McKenney Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/tty/sysrq.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c index b767a64e49d9..7430e87d7352 100644 --- a/drivers/tty/sysrq.c +++ b/drivers/tty/sysrq.c @@ -510,9 +510,8 @@ void __handle_sysrq(int key, bool check_mask) struct sysrq_key_op *op_p; int orig_log_level; int i; - unsigned long flags; - spin_lock_irqsave(&sysrq_key_table_lock, flags); + rcu_read_lock(); /* * Raise the apparent loglevel to maximum so that the sysrq header * is shown to provide the user with positive feedback. We do not @@ -554,7 +553,7 @@ void __handle_sysrq(int key, bool check_mask) printk("\n"); console_loglevel = orig_log_level; } - spin_unlock_irqrestore(&sysrq_key_table_lock, flags); + rcu_read_unlock(); } void handle_sysrq(int key) @@ -1043,16 +1042,23 @@ static int __sysrq_swap_key_ops(int key, struct sysrq_key_op *insert_op_p, struct sysrq_key_op *remove_op_p) { int retval; - unsigned long flags; - spin_lock_irqsave(&sysrq_key_table_lock, flags); + spin_lock(&sysrq_key_table_lock); if (__sysrq_get_key_op(key) == remove_op_p) { __sysrq_put_key_op(key, insert_op_p); retval = 0; } else { retval = -1; } - spin_unlock_irqrestore(&sysrq_key_table_lock, flags); + spin_unlock(&sysrq_key_table_lock); + + /* + * A concurrent __handle_sysrq either got the old op or the new op. + * Wait for it to go away before returning, so the code for an old + * op is not freed (eg. on module unload) while it is in use. + */ + synchronize_rcu(); + return retval; } -- cgit v1.2.3 From 722773afd83209d4088d30946bc274f547528a0b Mon Sep 17 00:00:00 2001 From: Rik van Riel Date: Fri, 6 Jun 2014 14:38:14 -0700 Subject: sysrq,rcu: suppress RCU stall warnings while sysrq runs Some sysrq handlers can run for a long time, because they dump a lot of data onto a serial console. Having RCU stall warnings pop up in the middle of them only makes the problem worse. This patch temporarily disables RCU stall warnings while a sysrq request is handled. Signed-off-by: Rik van Riel Suggested-by: Paul McKenney Signed-off-by: Paul E. McKenney Cc: Madper Xie Cc: Randy Dunlap Cc: Richard Weinberger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/tty/sysrq.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c index 7430e87d7352..454b65898e2c 100644 --- a/drivers/tty/sysrq.c +++ b/drivers/tty/sysrq.c @@ -46,6 +46,7 @@ #include #include #include +#include #include #include @@ -511,6 +512,7 @@ void __handle_sysrq(int key, bool check_mask) int orig_log_level; int i; + rcu_sysrq_start(); rcu_read_lock(); /* * Raise the apparent loglevel to maximum so that the sysrq header @@ -554,6 +556,7 @@ void __handle_sysrq(int key, bool check_mask) console_loglevel = orig_log_level; } rcu_read_unlock(); + rcu_sysrq_end(); } void handle_sysrq(int key) -- cgit v1.2.3 From 688eb988d15af55c1d1b70b1ca9f6ce58f277c20 Mon Sep 17 00:00:00 2001 From: Michal Hocko Date: Fri, 6 Jun 2014 14:38:15 -0700 Subject: vmscan: memcg: always use swappiness of the reclaimed memcg Memory reclaim always uses swappiness of the reclaim target memcg (origin of the memory pressure) or vm_swappiness for global memory reclaim. This behavior was consistent (except for difference between global and hard limit reclaim) because swappiness was enforced to be consistent within each memcg hierarchy. After "mm: memcontrol: remove hierarchy restrictions for swappiness and oom_control" each memcg can have its own swappiness independent of hierarchical parents, though, so the consistency guarantee is gone. This can lead to an unexpected behavior. Say that a group is explicitly configured to not swapout by memory.swappiness=0 but its memory gets swapped out anyway when the memory pressure comes from its parent with a It is also unexpected that the knob is meaningless without setting the hard limit which would trigger the reclaim and enforce the swappiness. There are setups where the hard limit is configured higher in the hierarchy by an administrator and children groups are under control of somebody else who is interested in the swapout behavior but not necessarily about the memory limit. From a semantic point of view swappiness is an attribute defining anon vs. file proportional scanning of LRU which is memcg specific (unlike charges which are propagated up the hierarchy) so it should be applied to the particular memcg's LRU regardless where the memory pressure comes from. This patch removes vmscan_swappiness() and stores the swappiness into the scan_control structure. mem_cgroup_swappiness is then used to provide the correct value before shrink_lruvec is called. The global vm_swappiness is used for the root memcg. [hughd@google.com: oopses immediately when booted with cgroup_disable=memory] Signed-off-by: Michal Hocko Acked-by: Johannes Weiner Cc: Tejun Heo Signed-off-by: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/cgroups/memory.txt | 15 +++++++-------- mm/memcontrol.c | 2 +- mm/vmscan.c | 18 ++++++++---------- 3 files changed, 16 insertions(+), 19 deletions(-) diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt index 4937e6fff9b4..b3429aec444c 100644 --- a/Documentation/cgroups/memory.txt +++ b/Documentation/cgroups/memory.txt @@ -540,14 +540,13 @@ Note: 5.3 swappiness -Similar to /proc/sys/vm/swappiness, but only affecting reclaim that is -triggered by this cgroup's hard limit. The tunable in the root cgroup -corresponds to the global swappiness setting. - -Please note that unlike the global swappiness, memcg knob set to 0 -really prevents from any swapping even if there is a swap storage -available. This might lead to memcg OOM killer if there are no file -pages to reclaim. +Overrides /proc/sys/vm/swappiness for the particular group. The tunable +in the root cgroup corresponds to the global swappiness setting. + +Please note that unlike during the global reclaim, limit reclaim +enforces that 0 swappiness really prevents from any swapping even if +there is a swap storage available. This might lead to memcg OOM killer +if there are no file pages to reclaim. 5.4 failcnt diff --git a/mm/memcontrol.c b/mm/memcontrol.c index a500cb0594c4..9bf8a84bcaae 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1550,7 +1550,7 @@ static unsigned long mem_cgroup_margin(struct mem_cgroup *memcg) int mem_cgroup_swappiness(struct mem_cgroup *memcg) { /* root ? */ - if (!css_parent(&memcg->css)) + if (mem_cgroup_disabled() || !css_parent(&memcg->css)) return vm_swappiness; return memcg->swappiness; diff --git a/mm/vmscan.c b/mm/vmscan.c index 05d41c0d7f6c..f44476a41544 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -83,6 +83,9 @@ struct scan_control { /* Scan (total_size >> priority) pages at once */ int priority; + /* anon vs. file LRUs scanning "ratio" */ + int swappiness; + /* * The memory cgroup that hit its limit and as a result is the * primary target of this reclaim invocation. @@ -1845,13 +1848,6 @@ static unsigned long shrink_list(enum lru_list lru, unsigned long nr_to_scan, return shrink_inactive_list(nr_to_scan, lruvec, sc, lru); } -static int vmscan_swappiness(struct scan_control *sc) -{ - if (global_reclaim(sc)) - return vm_swappiness; - return mem_cgroup_swappiness(sc->target_mem_cgroup); -} - enum scan_balance { SCAN_EQUAL, SCAN_FRACT, @@ -1912,7 +1908,7 @@ static void get_scan_count(struct lruvec *lruvec, struct scan_control *sc, * using the memory controller's swap limit feature would be * too expensive. */ - if (!global_reclaim(sc) && !vmscan_swappiness(sc)) { + if (!global_reclaim(sc) && !sc->swappiness) { scan_balance = SCAN_FILE; goto out; } @@ -1922,7 +1918,7 @@ static void get_scan_count(struct lruvec *lruvec, struct scan_control *sc, * system is close to OOM, scan both anon and file equally * (unless the swappiness setting disagrees with swapping). */ - if (!sc->priority && vmscan_swappiness(sc)) { + if (!sc->priority && sc->swappiness) { scan_balance = SCAN_EQUAL; goto out; } @@ -1965,7 +1961,7 @@ static void get_scan_count(struct lruvec *lruvec, struct scan_control *sc, * With swappiness at 100, anonymous and file have the same priority. * This scanning priority is essentially the inverse of IO cost. */ - anon_prio = vmscan_swappiness(sc); + anon_prio = sc->swappiness; file_prio = 200 - anon_prio; /* @@ -2265,6 +2261,7 @@ static void shrink_zone(struct zone *zone, struct scan_control *sc) lruvec = mem_cgroup_zone_lruvec(zone, memcg); + sc->swappiness = mem_cgroup_swappiness(memcg); shrink_lruvec(lruvec, sc); /* @@ -2731,6 +2728,7 @@ unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *memcg, .may_swap = !noswap, .order = 0, .priority = 0, + .swappiness = mem_cgroup_swappiness(memcg), .target_mem_cgroup = memcg, }; struct lruvec *lruvec = mem_cgroup_zone_lruvec(zone, memcg); -- cgit v1.2.3 From aae0ad7ae5a997bff1862e6e5eebed39cdf08ff3 Mon Sep 17 00:00:00 2001 From: Jianpeng Ma Date: Fri, 6 Jun 2014 14:38:16 -0700 Subject: mm/kmemleak.c: use %u to print ->checksum Signed-off-by: Jianpeng Ma Signed-off-by: Catalin Marinas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/kmemleak.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/kmemleak.c b/mm/kmemleak.c index 736ade31d1dc..5d4aec44982e 100644 --- a/mm/kmemleak.c +++ b/mm/kmemleak.c @@ -387,7 +387,7 @@ static void dump_object_info(struct kmemleak_object *object) pr_notice(" min_count = %d\n", object->min_count); pr_notice(" count = %d\n", object->count); pr_notice(" flags = 0x%lx\n", object->flags); - pr_notice(" checksum = %d\n", object->checksum); + pr_notice(" checksum = %u\n", object->checksum); pr_notice(" backtrace:\n"); print_stack_trace(&trace, 4); } -- cgit v1.2.3 From ffe2c748e283c5dc1b9b9ac116299dbfc11a609b Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Fri, 6 Jun 2014 14:38:17 -0700 Subject: mm: introduce kmemleak_update_trace() The memory allocation stack trace is not always useful for debugging a memory leak (e.g. radix_tree_preload). This function, when called, updates the stack trace for an already allocated object. Signed-off-by: Catalin Marinas Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/kmemleak.txt | 1 + include/linux/kmemleak.h | 4 ++++ mm/kmemleak.c | 34 ++++++++++++++++++++++++++++++++++ 3 files changed, 39 insertions(+) diff --git a/Documentation/kmemleak.txt b/Documentation/kmemleak.txt index a7563ec4ea7b..b772418bf064 100644 --- a/Documentation/kmemleak.txt +++ b/Documentation/kmemleak.txt @@ -142,6 +142,7 @@ kmemleak_alloc_percpu - notify of a percpu memory block allocation kmemleak_free - notify of a memory block freeing kmemleak_free_part - notify of a partial memory block freeing kmemleak_free_percpu - notify of a percpu memory block freeing +kmemleak_update_trace - update object allocation stack trace kmemleak_not_leak - mark an object as not a leak kmemleak_ignore - do not scan or report an object as leak kmemleak_scan_area - add scan areas inside a memory block diff --git a/include/linux/kmemleak.h b/include/linux/kmemleak.h index 5bb424659c04..057e95971014 100644 --- a/include/linux/kmemleak.h +++ b/include/linux/kmemleak.h @@ -30,6 +30,7 @@ extern void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size) __ref; extern void kmemleak_free(const void *ptr) __ref; extern void kmemleak_free_part(const void *ptr, size_t size) __ref; extern void kmemleak_free_percpu(const void __percpu *ptr) __ref; +extern void kmemleak_update_trace(const void *ptr) __ref; extern void kmemleak_not_leak(const void *ptr) __ref; extern void kmemleak_ignore(const void *ptr) __ref; extern void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) __ref; @@ -83,6 +84,9 @@ static inline void kmemleak_free_recursive(const void *ptr, unsigned long flags) static inline void kmemleak_free_percpu(const void __percpu *ptr) { } +static inline void kmemleak_update_trace(const void *ptr) +{ +} static inline void kmemleak_not_leak(const void *ptr) { } diff --git a/mm/kmemleak.c b/mm/kmemleak.c index 5d4aec44982e..3cda50c1e394 100644 --- a/mm/kmemleak.c +++ b/mm/kmemleak.c @@ -989,6 +989,40 @@ void __ref kmemleak_free_percpu(const void __percpu *ptr) } EXPORT_SYMBOL_GPL(kmemleak_free_percpu); +/** + * kmemleak_update_trace - update object allocation stack trace + * @ptr: pointer to beginning of the object + * + * Override the object allocation stack trace for cases where the actual + * allocation place is not always useful. + */ +void __ref kmemleak_update_trace(const void *ptr) +{ + struct kmemleak_object *object; + unsigned long flags; + + pr_debug("%s(0x%p)\n", __func__, ptr); + + if (!kmemleak_enabled || IS_ERR_OR_NULL(ptr)) + return; + + object = find_and_get_object((unsigned long)ptr, 1); + if (!object) { +#ifdef DEBUG + kmemleak_warn("Updating stack trace for unknown object at %p\n", + ptr); +#endif + return; + } + + spin_lock_irqsave(&object->lock, flags); + object->trace_len = __save_stack_trace(object->trace); + spin_unlock_irqrestore(&object->lock, flags); + + put_object(object); +} +EXPORT_SYMBOL(kmemleak_update_trace); + /** * kmemleak_not_leak - mark an allocated object as false positive * @ptr: pointer to beginning of the object -- cgit v1.2.3 From ce80b067de8cdb44e161a20fd7b324ad3f557446 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Fri, 6 Jun 2014 14:38:18 -0700 Subject: lib/radix-tree.c: update the kmemleak stack trace for radix tree allocations Since radix_tree_preload() stack trace is not always useful for debugging an actual radix tree memory leak, this patch updates the kmemleak allocation stack trace in the radix_tree_node_alloc() function. Signed-off-by: Catalin Marinas Acked-by: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/radix-tree.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/lib/radix-tree.c b/lib/radix-tree.c index d64815651e90..3291a8e37490 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -27,6 +27,7 @@ #include #include #include +#include #include #include #include @@ -200,6 +201,11 @@ radix_tree_node_alloc(struct radix_tree_root *root) rtp->nodes[rtp->nr - 1] = NULL; rtp->nr--; } + /* + * Update the allocation stack trace as this is more useful + * for debugging. + */ + kmemleak_update_trace(ret); } if (ret == NULL) ret = kmem_cache_alloc(radix_tree_node_cachep, gfp_mask); -- cgit v1.2.3 From 174119628188b085c66fe7d86fbfb4cccb1bd864 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Fri, 6 Jun 2014 14:38:19 -0700 Subject: mm/mempool.c: update the kmemleak stack trace for mempool allocations When mempool_alloc() returns an existing pool object, kmemleak_alloc() is no longer called and the stack trace corresponds to the original object allocation. This patch updates the kmemleak allocation stack trace for such objects to make it more useful for debugging. Signed-off-by: Catalin Marinas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/mempool.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/mempool.c b/mm/mempool.c index 455d468c3a5d..e209c98c7203 100644 --- a/mm/mempool.c +++ b/mm/mempool.c @@ -10,6 +10,7 @@ #include #include +#include #include #include #include @@ -222,6 +223,11 @@ repeat_alloc: spin_unlock_irqrestore(&pool->lock, flags); /* paired with rmb in mempool_free(), read comment there */ smp_wmb(); + /* + * Update the allocation stack trace as this is more useful + * for debugging. + */ + kmemleak_update_trace(element); return element; } -- cgit v1.2.3 From aedf95ea0583676cd7bfa395681ad744791a433e Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Fri, 6 Jun 2014 14:38:20 -0700 Subject: mm/memblock.c: call kmemleak directly from memblock_(alloc|free) Kmemleak could ignore memory blocks allocated via memblock_alloc() leading to false positives during scanning. This patch adds the corresponding callbacks and removes kmemleak_free_* calls in mm/nobootmem.c to avoid duplication. The kmemleak_alloc() in mm/nobootmem.c is kept since __alloc_memory_core_early() does not use memblock_alloc() directly. Signed-off-by: Catalin Marinas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memblock.c | 10 ++++++++-- mm/nobootmem.c | 2 -- 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/mm/memblock.c b/mm/memblock.c index 0aa0d2b07624..6d2f219a48b0 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -691,6 +691,7 @@ int __init_memblock memblock_free(phys_addr_t base, phys_addr_t size) (unsigned long long)base + size - 1, (void *)_RET_IP_); + kmemleak_free_part(__va(base), size); return memblock_remove_range(&memblock.reserved, base, size); } @@ -1043,9 +1044,14 @@ static phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size, align = SMP_CACHE_BYTES; found = memblock_find_in_range_node(size, align, start, end, nid); - if (found && !memblock_reserve(found, size)) + if (found && !memblock_reserve(found, size)) { + /* + * The min_count is set to 0 so that memblock allocations are + * never reported as leaks. + */ + kmemleak_alloc(__va(found), size, 0, 0); return found; - + } return 0; } diff --git a/mm/nobootmem.c b/mm/nobootmem.c index 04a9d94333a5..7ed58602e71b 100644 --- a/mm/nobootmem.c +++ b/mm/nobootmem.c @@ -197,7 +197,6 @@ unsigned long __init free_all_bootmem(void) void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr, unsigned long size) { - kmemleak_free_part(__va(physaddr), size); memblock_free(physaddr, size); } @@ -212,7 +211,6 @@ void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr, */ void __init free_bootmem(unsigned long addr, unsigned long size) { - kmemleak_free_part(__va(addr), size); memblock_free(addr, size); } -- cgit v1.2.3 From e231875ba7a118de7970fae3ac08b244a2822074 Mon Sep 17 00:00:00 2001 From: Jianyu Zhan Date: Fri, 6 Jun 2014 14:38:20 -0700 Subject: mm: memcontrol: clean up memcg zoneinfo lookup Memcg zoneinfo lookup sites have either the page, the zone, or the node id and zone index, but sites that only have the zone have to look up the node id and zone index themselves, whereas sites that already have those two integers use a function for a simple pointer chase. Provide mem_cgroup_zone_zoneinfo() that takes a zone pointer and let sites that already have node id and zone index - all for each node, for each zone iterators - use &memcg->nodeinfo[nid]->zoneinfo[zid]. Rename page_cgroup_zoneinfo() to mem_cgroup_page_zoneinfo() to match. Signed-off-by: Jianyu Zhan Signed-off-by: Johannes Weiner Acked-by: Michal Hocko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 89 +++++++++++++++++++++++++-------------------------------- 1 file changed, 39 insertions(+), 50 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 9bf8a84bcaae..41c1b393fef5 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -676,9 +676,11 @@ static void disarm_static_keys(struct mem_cgroup *memcg) static void drain_all_stock_async(struct mem_cgroup *memcg); static struct mem_cgroup_per_zone * -mem_cgroup_zoneinfo(struct mem_cgroup *memcg, int nid, int zid) +mem_cgroup_zone_zoneinfo(struct mem_cgroup *memcg, struct zone *zone) { - VM_BUG_ON((unsigned)nid >= nr_node_ids); + int nid = zone_to_nid(zone); + int zid = zone_idx(zone); + return &memcg->nodeinfo[nid]->zoneinfo[zid]; } @@ -688,12 +690,12 @@ struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *memcg) } static struct mem_cgroup_per_zone * -page_cgroup_zoneinfo(struct mem_cgroup *memcg, struct page *page) +mem_cgroup_page_zoneinfo(struct mem_cgroup *memcg, struct page *page) { int nid = page_to_nid(page); int zid = page_zonenum(page); - return mem_cgroup_zoneinfo(memcg, nid, zid); + return &memcg->nodeinfo[nid]->zoneinfo[zid]; } static struct mem_cgroup_tree_per_zone * @@ -772,16 +774,14 @@ static void mem_cgroup_update_tree(struct mem_cgroup *memcg, struct page *page) unsigned long long excess; struct mem_cgroup_per_zone *mz; struct mem_cgroup_tree_per_zone *mctz; - int nid = page_to_nid(page); - int zid = page_zonenum(page); - mctz = soft_limit_tree_from_page(page); + mctz = soft_limit_tree_from_page(page); /* * Necessary to update all ancestors when hierarchy is used. * because their event counter is not touched. */ for (; memcg; memcg = parent_mem_cgroup(memcg)) { - mz = mem_cgroup_zoneinfo(memcg, nid, zid); + mz = mem_cgroup_page_zoneinfo(memcg, page); excess = res_counter_soft_limit_excess(&memcg->res); /* * We have to update the tree if mz is on RB-tree or @@ -804,14 +804,14 @@ static void mem_cgroup_update_tree(struct mem_cgroup *memcg, struct page *page) static void mem_cgroup_remove_from_trees(struct mem_cgroup *memcg) { - int node, zone; - struct mem_cgroup_per_zone *mz; struct mem_cgroup_tree_per_zone *mctz; + struct mem_cgroup_per_zone *mz; + int nid, zid; - for_each_node(node) { - for (zone = 0; zone < MAX_NR_ZONES; zone++) { - mz = mem_cgroup_zoneinfo(memcg, node, zone); - mctz = soft_limit_tree_node_zone(node, zone); + for_each_node(nid) { + for (zid = 0; zid < MAX_NR_ZONES; zid++) { + mz = &memcg->nodeinfo[nid]->zoneinfo[zid]; + mctz = soft_limit_tree_node_zone(nid, zid); mem_cgroup_remove_exceeded(memcg, mz, mctz); } } @@ -946,8 +946,7 @@ static void mem_cgroup_charge_statistics(struct mem_cgroup *memcg, __this_cpu_add(memcg->stat->nr_page_events, nr_pages); } -unsigned long -mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru) +unsigned long mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru) { struct mem_cgroup_per_zone *mz; @@ -955,46 +954,38 @@ mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru) return mz->lru_size[lru]; } -static unsigned long -mem_cgroup_zone_nr_lru_pages(struct mem_cgroup *memcg, int nid, int zid, - unsigned int lru_mask) -{ - struct mem_cgroup_per_zone *mz; - enum lru_list lru; - unsigned long ret = 0; - - mz = mem_cgroup_zoneinfo(memcg, nid, zid); - - for_each_lru(lru) { - if (BIT(lru) & lru_mask) - ret += mz->lru_size[lru]; - } - return ret; -} - -static unsigned long -mem_cgroup_node_nr_lru_pages(struct mem_cgroup *memcg, - int nid, unsigned int lru_mask) +static unsigned long mem_cgroup_node_nr_lru_pages(struct mem_cgroup *memcg, + int nid, + unsigned int lru_mask) { - u64 total = 0; + unsigned long nr = 0; int zid; - for (zid = 0; zid < MAX_NR_ZONES; zid++) - total += mem_cgroup_zone_nr_lru_pages(memcg, - nid, zid, lru_mask); + VM_BUG_ON((unsigned)nid >= nr_node_ids); + + for (zid = 0; zid < MAX_NR_ZONES; zid++) { + struct mem_cgroup_per_zone *mz; + enum lru_list lru; - return total; + for_each_lru(lru) { + if (!(BIT(lru) & lru_mask)) + continue; + mz = &memcg->nodeinfo[nid]->zoneinfo[zid]; + nr += mz->lru_size[lru]; + } + } + return nr; } static unsigned long mem_cgroup_nr_lru_pages(struct mem_cgroup *memcg, unsigned int lru_mask) { + unsigned long nr = 0; int nid; - u64 total = 0; for_each_node_state(nid, N_MEMORY) - total += mem_cgroup_node_nr_lru_pages(memcg, nid, lru_mask); - return total; + nr += mem_cgroup_node_nr_lru_pages(memcg, nid, lru_mask); + return nr; } static bool mem_cgroup_event_ratelimit(struct mem_cgroup *memcg, @@ -1242,11 +1233,9 @@ struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *root, int uninitialized_var(seq); if (reclaim) { - int nid = zone_to_nid(reclaim->zone); - int zid = zone_idx(reclaim->zone); struct mem_cgroup_per_zone *mz; - mz = mem_cgroup_zoneinfo(root, nid, zid); + mz = mem_cgroup_zone_zoneinfo(root, reclaim->zone); iter = &mz->reclaim_iter[reclaim->priority]; if (prev && reclaim->generation != iter->generation) { iter->last_visited = NULL; @@ -1353,7 +1342,7 @@ struct lruvec *mem_cgroup_zone_lruvec(struct zone *zone, goto out; } - mz = mem_cgroup_zoneinfo(memcg, zone_to_nid(zone), zone_idx(zone)); + mz = mem_cgroup_zone_zoneinfo(memcg, zone); lruvec = &mz->lruvec; out: /* @@ -1412,7 +1401,7 @@ struct lruvec *mem_cgroup_page_lruvec(struct page *page, struct zone *zone) if (!PageLRU(page) && !PageCgroupUsed(pc) && memcg != root_mem_cgroup) pc->mem_cgroup = memcg = root_mem_cgroup; - mz = page_cgroup_zoneinfo(memcg, page); + mz = mem_cgroup_page_zoneinfo(memcg, page); lruvec = &mz->lruvec; out: /* @@ -5305,7 +5294,7 @@ static int memcg_stat_show(struct seq_file *m, void *v) for_each_online_node(nid) for (zid = 0; zid < MAX_NR_ZONES; zid++) { - mz = mem_cgroup_zoneinfo(memcg, nid, zid); + mz = &memcg->nodeinfo[nid]->zoneinfo[zid]; rstat = &mz->lruvec.reclaim_stat; recent_rotated[0] += rstat->recent_rotated[0]; -- cgit v1.2.3 From cf2c81279eb0f66d382c0e889c266f8a57785cc4 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Fri, 6 Jun 2014 14:38:21 -0700 Subject: mm: memcontrol: remove unnecessary memcg argument from soft limit functions Signed-off-by: Johannes Weiner Acked-by: Michal Hocko Cc: Jianyu Zhan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 34 ++++++++++++++-------------------- 1 file changed, 14 insertions(+), 20 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 41c1b393fef5..a9559b91603c 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -713,11 +713,9 @@ soft_limit_tree_from_page(struct page *page) return &soft_limit_tree.rb_tree_per_node[nid]->rb_tree_per_zone[zid]; } -static void -__mem_cgroup_insert_exceeded(struct mem_cgroup *memcg, - struct mem_cgroup_per_zone *mz, - struct mem_cgroup_tree_per_zone *mctz, - unsigned long long new_usage_in_excess) +static void __mem_cgroup_insert_exceeded(struct mem_cgroup_per_zone *mz, + struct mem_cgroup_tree_per_zone *mctz, + unsigned long long new_usage_in_excess) { struct rb_node **p = &mctz->rb_root.rb_node; struct rb_node *parent = NULL; @@ -747,10 +745,8 @@ __mem_cgroup_insert_exceeded(struct mem_cgroup *memcg, mz->on_tree = true; } -static void -__mem_cgroup_remove_exceeded(struct mem_cgroup *memcg, - struct mem_cgroup_per_zone *mz, - struct mem_cgroup_tree_per_zone *mctz) +static void __mem_cgroup_remove_exceeded(struct mem_cgroup_per_zone *mz, + struct mem_cgroup_tree_per_zone *mctz) { if (!mz->on_tree) return; @@ -758,13 +754,11 @@ __mem_cgroup_remove_exceeded(struct mem_cgroup *memcg, mz->on_tree = false; } -static void -mem_cgroup_remove_exceeded(struct mem_cgroup *memcg, - struct mem_cgroup_per_zone *mz, - struct mem_cgroup_tree_per_zone *mctz) +static void mem_cgroup_remove_exceeded(struct mem_cgroup_per_zone *mz, + struct mem_cgroup_tree_per_zone *mctz) { spin_lock(&mctz->lock); - __mem_cgroup_remove_exceeded(memcg, mz, mctz); + __mem_cgroup_remove_exceeded(mz, mctz); spin_unlock(&mctz->lock); } @@ -791,12 +785,12 @@ static void mem_cgroup_update_tree(struct mem_cgroup *memcg, struct page *page) spin_lock(&mctz->lock); /* if on-tree, remove it */ if (mz->on_tree) - __mem_cgroup_remove_exceeded(memcg, mz, mctz); + __mem_cgroup_remove_exceeded(mz, mctz); /* * Insert again. mz->usage_in_excess will be updated. * If excess is 0, no tree ops. */ - __mem_cgroup_insert_exceeded(memcg, mz, mctz, excess); + __mem_cgroup_insert_exceeded(mz, mctz, excess); spin_unlock(&mctz->lock); } } @@ -812,7 +806,7 @@ static void mem_cgroup_remove_from_trees(struct mem_cgroup *memcg) for (zid = 0; zid < MAX_NR_ZONES; zid++) { mz = &memcg->nodeinfo[nid]->zoneinfo[zid]; mctz = soft_limit_tree_node_zone(nid, zid); - mem_cgroup_remove_exceeded(memcg, mz, mctz); + mem_cgroup_remove_exceeded(mz, mctz); } } } @@ -835,7 +829,7 @@ retry: * we will to add it back at the end of reclaim to its correct * position in the tree. */ - __mem_cgroup_remove_exceeded(mz->memcg, mz, mctz); + __mem_cgroup_remove_exceeded(mz, mctz); if (!res_counter_soft_limit_excess(&mz->memcg->res) || !css_tryget(&mz->memcg->css)) goto retry; @@ -4586,7 +4580,7 @@ unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order, break; } while (1); } - __mem_cgroup_remove_exceeded(mz->memcg, mz, mctz); + __mem_cgroup_remove_exceeded(mz, mctz); excess = res_counter_soft_limit_excess(&mz->memcg->res); /* * One school of thought says that we should not add @@ -4597,7 +4591,7 @@ unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order, * term TODO. */ /* If excess == 0, no tree ops */ - __mem_cgroup_insert_exceeded(mz->memcg, mz, mctz, excess); + __mem_cgroup_insert_exceeded(mz, mctz, excess); spin_unlock(&mctz->lock); css_put(&mz->memcg->css); loop++; -- cgit v1.2.3 From 33041a0d76d3c3e0aff28ac95a2ffdedf1282dbc Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Fri, 6 Jun 2014 14:38:23 -0700 Subject: mm: mark remap_file_pages() syscall as deprecated The remap_file_pages() system call is used to create a nonlinear mapping, that is, a mapping in which the pages of the file are mapped into a nonsequential order in memory. The advantage of using remap_file_pages() over using repeated calls to mmap(2) is that the former approach does not require the kernel to create additional VMA (Virtual Memory Area) data structures. Supporting of nonlinear mapping requires significant amount of non-trivial code in kernel virtual memory subsystem including hot paths. Also to get nonlinear mapping work kernel need a way to distinguish normal page table entries from entries with file offset (pte_file). Kernel reserves flag in PTE for this purpose. PTE flags are scarce resource especially on some CPU architectures. It would be nice to free up the flag for other usage. Fortunately, there are not many users of remap_file_pages() in the wild. It's only known that one enterprise RDBMS implementation uses the syscall on 32-bit systems to map files bigger than can linearly fit into 32-bit virtual address space. This use-case is not critical anymore since 64-bit systems are widely available. The plan is to deprecate the syscall and replace it with an emulation. The emulation will create new VMAs instead of nonlinear mappings. It's going to work slower for rare users of remap_file_pages() but ABI is preserved. One side effect of emulation (apart from performance) is that user can hit vm.max_map_count limit more easily due to additional VMAs. See comment for DEFAULT_MAX_MAP_COUNT for more details on the limit. [akpm@linux-foundation.org: fix spello] Signed-off-by: Kirill A. Shutemov Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Dave Jones Cc: Armin Rigo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/vm/remap_file_pages.txt | 28 ++++++++++++++++++++++++++++ mm/fremap.c | 4 ++++ 2 files changed, 32 insertions(+) create mode 100644 Documentation/vm/remap_file_pages.txt diff --git a/Documentation/vm/remap_file_pages.txt b/Documentation/vm/remap_file_pages.txt new file mode 100644 index 000000000000..560e4363a55d --- /dev/null +++ b/Documentation/vm/remap_file_pages.txt @@ -0,0 +1,28 @@ +The remap_file_pages() system call is used to create a nonlinear mapping, +that is, a mapping in which the pages of the file are mapped into a +nonsequential order in memory. The advantage of using remap_file_pages() +over using repeated calls to mmap(2) is that the former approach does not +require the kernel to create additional VMA (Virtual Memory Area) data +structures. + +Supporting of nonlinear mapping requires significant amount of non-trivial +code in kernel virtual memory subsystem including hot paths. Also to get +nonlinear mapping work kernel need a way to distinguish normal page table +entries from entries with file offset (pte_file). Kernel reserves flag in +PTE for this purpose. PTE flags are scarce resource especially on some CPU +architectures. It would be nice to free up the flag for other usage. + +Fortunately, there are not many users of remap_file_pages() in the wild. +It's only known that one enterprise RDBMS implementation uses the syscall +on 32-bit systems to map files bigger than can linearly fit into 32-bit +virtual address space. This use-case is not critical anymore since 64-bit +systems are widely available. + +The plan is to deprecate the syscall and replace it with an emulation. +The emulation will create new VMAs instead of nonlinear mappings. It's +going to work slower for rare users of remap_file_pages() but ABI is +preserved. + +One side effect of emulation (apart from performance) is that user can hit +vm.max_map_count limit more easily due to additional VMAs. See comment for +DEFAULT_MAX_MAP_COUNT for more details on the limit. diff --git a/mm/fremap.c b/mm/fremap.c index 2c5646f11f41..72b8fa361433 100644 --- a/mm/fremap.c +++ b/mm/fremap.c @@ -149,6 +149,10 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, int has_write_lock = 0; vm_flags_t vm_flags = 0; + pr_warn_once("%s (%d) uses deprecated remap_file_pages() syscall. " + "See Documentation/vm/remap_file_pages.txt.\n", + current->comm, current->pid); + if (prot) return err; /* -- cgit v1.2.3 From 4f4c337fb7fb946824a26e78e37b85ef25e0a4a2 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:38:24 -0700 Subject: fs/dlm/config.c: convert simple_str to kstr Replace obsolete functions simple_strtoul/kstrtouint simple_strtol/kstrtoint (kstr __must_check requires the right function to be applied) Signed-off-by: Fabian Frederick Cc: Christine Caulfield Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/dlm/config.c | 26 ++++++++++++++++++++------ 1 file changed, 20 insertions(+), 6 deletions(-) diff --git a/fs/dlm/config.c b/fs/dlm/config.c index 76feb4b60fa6..d521bddf876d 100644 --- a/fs/dlm/config.c +++ b/fs/dlm/config.c @@ -157,11 +157,13 @@ static ssize_t cluster_set(struct dlm_cluster *cl, unsigned int *cl_field, const char *buf, size_t len) { unsigned int x; + int rc; if (!capable(CAP_SYS_ADMIN)) return -EPERM; - - x = simple_strtoul(buf, NULL, 0); + rc = kstrtouint(buf, 0, &x); + if (rc) + return rc; if (check_zero && !x) return -EINVAL; @@ -730,7 +732,10 @@ static ssize_t comm_nodeid_read(struct dlm_comm *cm, char *buf) static ssize_t comm_nodeid_write(struct dlm_comm *cm, const char *buf, size_t len) { - cm->nodeid = simple_strtol(buf, NULL, 0); + int rc = kstrtoint(buf, 0, &cm->nodeid); + + if (rc) + return rc; return len; } @@ -742,7 +747,10 @@ static ssize_t comm_local_read(struct dlm_comm *cm, char *buf) static ssize_t comm_local_write(struct dlm_comm *cm, const char *buf, size_t len) { - cm->local= simple_strtol(buf, NULL, 0); + int rc = kstrtoint(buf, 0, &cm->local); + + if (rc) + return rc; if (cm->local && !local_comm) local_comm = cm; return len; @@ -846,7 +854,10 @@ static ssize_t node_nodeid_write(struct dlm_node *nd, const char *buf, size_t len) { uint32_t seq = 0; - nd->nodeid = simple_strtol(buf, NULL, 0); + int rc = kstrtoint(buf, 0, &nd->nodeid); + + if (rc) + return rc; dlm_comm_seq(nd->nodeid, &seq); nd->comm_seq = seq; return len; @@ -860,7 +871,10 @@ static ssize_t node_weight_read(struct dlm_node *nd, char *buf) static ssize_t node_weight_write(struct dlm_node *nd, const char *buf, size_t len) { - nd->weight = simple_strtol(buf, NULL, 0); + int rc = kstrtoint(buf, 0, &nd->weight); + + if (rc) + return rc; return len; } -- cgit v1.2.3 From 6edb56871a524a879c2356860917ebb01ffd20c4 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:38:25 -0700 Subject: fs/dlm/lockspace.c: convert simple_str to kstr Replace obsolete functions. Signed-off-by: Fabian Frederick Cc: Christine Caulfield Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/dlm/lockspace.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c index 04d6398c1f1c..f3e72787e7f9 100644 --- a/fs/dlm/lockspace.c +++ b/fs/dlm/lockspace.c @@ -35,8 +35,11 @@ static struct task_struct * scand_task; static ssize_t dlm_control_store(struct dlm_ls *ls, const char *buf, size_t len) { ssize_t ret = len; - int n = simple_strtol(buf, NULL, 0); + int n; + int rc = kstrtoint(buf, 0, &n); + if (rc) + return rc; ls = dlm_find_lockspace_local(ls->ls_local_handle); if (!ls) return -EINVAL; @@ -57,7 +60,10 @@ static ssize_t dlm_control_store(struct dlm_ls *ls, const char *buf, size_t len) static ssize_t dlm_event_store(struct dlm_ls *ls, const char *buf, size_t len) { - ls->ls_uevent_result = simple_strtol(buf, NULL, 0); + int rc = kstrtoint(buf, 0, &ls->ls_uevent_result); + + if (rc) + return rc; set_bit(LSFL_UEVENT_WAIT, &ls->ls_flags); wake_up(&ls->ls_uevent_wait); return len; @@ -70,7 +76,10 @@ static ssize_t dlm_id_show(struct dlm_ls *ls, char *buf) static ssize_t dlm_id_store(struct dlm_ls *ls, const char *buf, size_t len) { - ls->ls_global_id = simple_strtoul(buf, NULL, 0); + int rc = kstrtouint(buf, 0, &ls->ls_global_id); + + if (rc) + return rc; return len; } @@ -81,7 +90,11 @@ static ssize_t dlm_nodir_show(struct dlm_ls *ls, char *buf) static ssize_t dlm_nodir_store(struct dlm_ls *ls, const char *buf, size_t len) { - int val = simple_strtoul(buf, NULL, 0); + int val; + int rc = kstrtoint(buf, 0, &val); + + if (rc) + return rc; if (val == 1) set_bit(LSFL_NODIR, &ls->ls_flags); return len; -- cgit v1.2.3 From c1d4518c4e530fc47180a1858d7d0ad55a069d41 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:38:25 -0700 Subject: fs/dlm/debug_fs.c: replace seq_printf by seq_puts Replace seq_printf where possible. This patch also fixes the following checkpatch warning "unnecessary whitespace before a quoted newline" Signed-off-by: Fabian Frederick Cc: Christine Caulfield Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/dlm/debug_fs.c | 34 +++++++++++++++++----------------- 1 file changed, 17 insertions(+), 17 deletions(-) diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c index b969deef9ebb..8d77ba7b1756 100644 --- a/fs/dlm/debug_fs.c +++ b/fs/dlm/debug_fs.c @@ -68,7 +68,7 @@ static int print_format1_lock(struct seq_file *s, struct dlm_lkb *lkb, if (lkb->lkb_wait_type) seq_printf(s, " wait_type: %d", lkb->lkb_wait_type); - return seq_printf(s, "\n"); + return seq_puts(s, "\n"); } static int print_format1(struct dlm_rsb *res, struct seq_file *s) @@ -92,31 +92,31 @@ static int print_format1(struct dlm_rsb *res, struct seq_file *s) } if (res->res_nodeid > 0) - rv = seq_printf(s, "\" \nLocal Copy, Master is node %d\n", + rv = seq_printf(s, "\"\nLocal Copy, Master is node %d\n", res->res_nodeid); else if (res->res_nodeid == 0) - rv = seq_printf(s, "\" \nMaster Copy\n"); + rv = seq_puts(s, "\"\nMaster Copy\n"); else if (res->res_nodeid == -1) - rv = seq_printf(s, "\" \nLooking up master (lkid %x)\n", + rv = seq_printf(s, "\"\nLooking up master (lkid %x)\n", res->res_first_lkid); else - rv = seq_printf(s, "\" \nInvalid master %d\n", + rv = seq_printf(s, "\"\nInvalid master %d\n", res->res_nodeid); if (rv) goto out; /* Print the LVB: */ if (res->res_lvbptr) { - seq_printf(s, "LVB: "); + seq_puts(s, "LVB: "); for (i = 0; i < lvblen; i++) { if (i == lvblen / 2) - seq_printf(s, "\n "); + seq_puts(s, "\n "); seq_printf(s, "%02x ", (unsigned char) res->res_lvbptr[i]); } if (rsb_flag(res, RSB_VALNOTVALID)) - seq_printf(s, " (INVALID)"); - rv = seq_printf(s, "\n"); + seq_puts(s, " (INVALID)"); + rv = seq_puts(s, "\n"); if (rv) goto out; } @@ -133,21 +133,21 @@ static int print_format1(struct dlm_rsb *res, struct seq_file *s) } /* Print the locks attached to this resource */ - seq_printf(s, "Granted Queue\n"); + seq_puts(s, "Granted Queue\n"); list_for_each_entry(lkb, &res->res_grantqueue, lkb_statequeue) { rv = print_format1_lock(s, lkb, res); if (rv) goto out; } - seq_printf(s, "Conversion Queue\n"); + seq_puts(s, "Conversion Queue\n"); list_for_each_entry(lkb, &res->res_convertqueue, lkb_statequeue) { rv = print_format1_lock(s, lkb, res); if (rv) goto out; } - seq_printf(s, "Waiting Queue\n"); + seq_puts(s, "Waiting Queue\n"); list_for_each_entry(lkb, &res->res_waitqueue, lkb_statequeue) { rv = print_format1_lock(s, lkb, res); if (rv) @@ -157,13 +157,13 @@ static int print_format1(struct dlm_rsb *res, struct seq_file *s) if (list_empty(&res->res_lookup)) goto out; - seq_printf(s, "Lookup Queue\n"); + seq_puts(s, "Lookup Queue\n"); list_for_each_entry(lkb, &res->res_lookup, lkb_rsb_lookup) { rv = seq_printf(s, "%08x %s", lkb->lkb_id, print_lockmode(lkb->lkb_rqmode)); if (lkb->lkb_wait_type) seq_printf(s, " wait_type: %d", lkb->lkb_wait_type); - rv = seq_printf(s, "\n"); + rv = seq_puts(s, "\n"); } out: unlock_rsb(res); @@ -300,7 +300,7 @@ static int print_format3(struct dlm_rsb *r, struct seq_file *s) else seq_printf(s, " %02x", (unsigned char)r->res_name[i]); } - rv = seq_printf(s, "\n"); + rv = seq_puts(s, "\n"); if (rv) goto out; @@ -311,7 +311,7 @@ static int print_format3(struct dlm_rsb *r, struct seq_file *s) for (i = 0; i < lvblen; i++) seq_printf(s, " %02x", (unsigned char)r->res_lvbptr[i]); - rv = seq_printf(s, "\n"); + rv = seq_puts(s, "\n"); if (rv) goto out; @@ -377,7 +377,7 @@ static int print_format4(struct dlm_rsb *r, struct seq_file *s) else seq_printf(s, " %02x", (unsigned char)r->res_name[i]); } - rv = seq_printf(s, "\n"); + rv = seq_puts(s, "\n"); out: unlock_rsb(r); return rv; -- cgit v1.2.3 From f59428ab73ce83adf801d86787c450cef4d9fff9 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:38:26 -0700 Subject: mm/kmemleak-test.c: use pr_fmt for logging Signed-off-by: Fabian Frederick Acked-by: Catalin Marinas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/kmemleak-test.c | 36 +++++++++++++++++++----------------- 1 file changed, 19 insertions(+), 17 deletions(-) diff --git a/mm/kmemleak-test.c b/mm/kmemleak-test.c index ff0d9779cec8..dcdcadb69533 100644 --- a/mm/kmemleak-test.c +++ b/mm/kmemleak-test.c @@ -18,6 +18,8 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#define pr_fmt(fmt) "kmemleak: " fmt + #include #include #include @@ -50,25 +52,25 @@ static int __init kmemleak_test_init(void) printk(KERN_INFO "Kmemleak testing\n"); /* make some orphan objects */ - pr_info("kmemleak: kmalloc(32) = %p\n", kmalloc(32, GFP_KERNEL)); - pr_info("kmemleak: kmalloc(32) = %p\n", kmalloc(32, GFP_KERNEL)); - pr_info("kmemleak: kmalloc(1024) = %p\n", kmalloc(1024, GFP_KERNEL)); - pr_info("kmemleak: kmalloc(1024) = %p\n", kmalloc(1024, GFP_KERNEL)); - pr_info("kmemleak: kmalloc(2048) = %p\n", kmalloc(2048, GFP_KERNEL)); - pr_info("kmemleak: kmalloc(2048) = %p\n", kmalloc(2048, GFP_KERNEL)); - pr_info("kmemleak: kmalloc(4096) = %p\n", kmalloc(4096, GFP_KERNEL)); - pr_info("kmemleak: kmalloc(4096) = %p\n", kmalloc(4096, GFP_KERNEL)); + pr_info("kmalloc(32) = %p\n", kmalloc(32, GFP_KERNEL)); + pr_info("kmalloc(32) = %p\n", kmalloc(32, GFP_KERNEL)); + pr_info("kmalloc(1024) = %p\n", kmalloc(1024, GFP_KERNEL)); + pr_info("kmalloc(1024) = %p\n", kmalloc(1024, GFP_KERNEL)); + pr_info("kmalloc(2048) = %p\n", kmalloc(2048, GFP_KERNEL)); + pr_info("kmalloc(2048) = %p\n", kmalloc(2048, GFP_KERNEL)); + pr_info("kmalloc(4096) = %p\n", kmalloc(4096, GFP_KERNEL)); + pr_info("kmalloc(4096) = %p\n", kmalloc(4096, GFP_KERNEL)); #ifndef CONFIG_MODULES - pr_info("kmemleak: kmem_cache_alloc(files_cachep) = %p\n", + pr_info("kmem_cache_alloc(files_cachep) = %p\n", kmem_cache_alloc(files_cachep, GFP_KERNEL)); - pr_info("kmemleak: kmem_cache_alloc(files_cachep) = %p\n", + pr_info("kmem_cache_alloc(files_cachep) = %p\n", kmem_cache_alloc(files_cachep, GFP_KERNEL)); #endif - pr_info("kmemleak: vmalloc(64) = %p\n", vmalloc(64)); - pr_info("kmemleak: vmalloc(64) = %p\n", vmalloc(64)); - pr_info("kmemleak: vmalloc(64) = %p\n", vmalloc(64)); - pr_info("kmemleak: vmalloc(64) = %p\n", vmalloc(64)); - pr_info("kmemleak: vmalloc(64) = %p\n", vmalloc(64)); + pr_info("vmalloc(64) = %p\n", vmalloc(64)); + pr_info("vmalloc(64) = %p\n", vmalloc(64)); + pr_info("vmalloc(64) = %p\n", vmalloc(64)); + pr_info("vmalloc(64) = %p\n", vmalloc(64)); + pr_info("vmalloc(64) = %p\n", vmalloc(64)); /* * Add elements to a list. They should only appear as orphan @@ -76,7 +78,7 @@ static int __init kmemleak_test_init(void) */ for (i = 0; i < 10; i++) { elem = kzalloc(sizeof(*elem), GFP_KERNEL); - pr_info("kmemleak: kzalloc(sizeof(*elem)) = %p\n", elem); + pr_info("kzalloc(sizeof(*elem)) = %p\n", elem); if (!elem) return -ENOMEM; INIT_LIST_HEAD(&elem->list); @@ -85,7 +87,7 @@ static int __init kmemleak_test_init(void) for_each_possible_cpu(i) { per_cpu(kmemleak_test_pointer, i) = kmalloc(129, GFP_KERNEL); - pr_info("kmemleak: kmalloc(129) = %p\n", + pr_info("kmalloc(129) = %p\n", per_cpu(kmemleak_test_pointer, i)); } -- cgit v1.2.3 From ea8f8fc8631d9f890580a94d57a18bfeb827fa2e Mon Sep 17 00:00:00 2001 From: Josh Triplett Date: Fri, 6 Jun 2014 14:38:27 -0700 Subject: MAINTAINERS: add linux-api for review of API/ABI changes This makes it more likely that patch submitters will CC API/ABI changes to the linux-api list, and tools like get_maintainer.pl will do so automatically. Signed-off-by: Josh Triplett Acked-by: Steven Rostedt Acked-by: Michael Kerrisk Cc: Joe Perches Cc: "David S. Miller" Cc: Greg Kroah-Hartman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- MAINTAINERS | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 7d101d5ba953..107cdf62e988 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -210,6 +210,13 @@ S: Supported F: Documentation/scsi/aacraid.txt F: drivers/scsi/aacraid/ +ABI/API +L: linux-api@vger.kernel.org +F: Documentation/ABI/ +F: include/linux/syscalls.h +F: include/uapi/ +F: kernel/sys_ni.c + ABIT UGURU 1,2 HARDWARE MONITOR DRIVER M: Hans de Goede L: lm-sensors@lm-sensors.org -- cgit v1.2.3 From b3fe92b03dd69261f931fe4463d9358e5077e1dc Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Fri, 6 Jun 2014 14:38:29 -0700 Subject: MAINTAINERS: adi-buildroot-devel is moderated Signed-off-by: Richard Weinberger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- MAINTAINERS | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index 107cdf62e988..f98da9025d7d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -654,7 +654,7 @@ F: sound/soc/codecs/ssm* F: sound/soc/codecs/sigmadsp.* ANALOG DEVICES INC ASOC DRIVERS -L: adi-buildroot-devel@lists.sourceforge.net +L: adi-buildroot-devel@lists.sourceforge.net (moderated for non-subscribers) L: alsa-devel@alsa-project.org (moderated for non-subscribers) W: http://blackfin.uclinux.org/ S: Supported @@ -1765,54 +1765,54 @@ F: include/uapi/linux/bfs_fs.h BLACKFIN ARCHITECTURE M: Steven Miao -L: adi-buildroot-devel@lists.sourceforge.net +L: adi-buildroot-devel@lists.sourceforge.net (moderated for non-subscribers) T: git git://git.code.sf.net/p/adi-linux/code W: http://blackfin.uclinux.org S: Supported F: arch/blackfin/ BLACKFIN EMAC DRIVER -L: adi-buildroot-devel@lists.sourceforge.net +L: adi-buildroot-devel@lists.sourceforge.net (moderated for non-subscribers) W: http://blackfin.uclinux.org S: Supported F: drivers/net/ethernet/adi/ BLACKFIN RTC DRIVER -L: adi-buildroot-devel@lists.sourceforge.net +L: adi-buildroot-devel@lists.sourceforge.net (moderated for non-subscribers) W: http://blackfin.uclinux.org S: Supported F: drivers/rtc/rtc-bfin.c BLACKFIN SDH DRIVER M: Sonic Zhang -L: adi-buildroot-devel@lists.sourceforge.net +L: adi-buildroot-devel@lists.sourceforge.net (moderated for non-subscribers) W: http://blackfin.uclinux.org S: Supported F: drivers/mmc/host/bfin_sdh.c BLACKFIN SERIAL DRIVER M: Sonic Zhang -L: adi-buildroot-devel@lists.sourceforge.net +L: adi-buildroot-devel@lists.sourceforge.net (moderated for non-subscribers) W: http://blackfin.uclinux.org S: Supported F: drivers/tty/serial/bfin_uart.c BLACKFIN WATCHDOG DRIVER -L: adi-buildroot-devel@lists.sourceforge.net +L: adi-buildroot-devel@lists.sourceforge.net (moderated for non-subscribers) W: http://blackfin.uclinux.org S: Supported F: drivers/watchdog/bfin_wdt.c BLACKFIN I2C TWI DRIVER M: Sonic Zhang -L: adi-buildroot-devel@lists.sourceforge.net +L: adi-buildroot-devel@lists.sourceforge.net (moderated for non-subscribers) W: http://blackfin.uclinux.org/ S: Supported F: drivers/i2c/busses/i2c-bfin-twi.c BLACKFIN MEDIA DRIVER M: Scott Jiang -L: adi-buildroot-devel@lists.sourceforge.net +L: adi-buildroot-devel@lists.sourceforge.net (moderated for non-subscribers) W: http://blackfin.uclinux.org/ S: Supported F: drivers/media/platform/blackfin/ -- cgit v1.2.3 From b1de0d139c97a6078bbada6cf2d27c30ce127a97 Mon Sep 17 00:00:00 2001 From: Mitchel Humpherys Date: Fri, 6 Jun 2014 14:38:30 -0700 Subject: mm: convert some level-less printks to pr_* printk is meant to be used with an associated log level. There are some instances of printk scattered around the mm code where the log level is missing. Add a log level and adhere to suggestions by scripts/checkpatch.pl by moving to the pr_* macros. Also add the typical pr_fmt definition so that print statements can be easily traced back to the modules where they occur, correlated one with another, etc. This will require the removal of some (now redundant) prefixes on a few print statements. Signed-off-by: Mitchel Humpherys Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- block/bounce.c | 7 +++++-- mm/mempolicy.c | 5 ++++- mm/mmap.c | 21 ++++++++++++--------- mm/nommu.c | 5 ++++- mm/vmscan.c | 5 ++++- 5 files changed, 29 insertions(+), 14 deletions(-) diff --git a/block/bounce.c b/block/bounce.c index 523918b8c6dc..ab21ba203d5c 100644 --- a/block/bounce.c +++ b/block/bounce.c @@ -3,6 +3,8 @@ * - Split from highmem.c */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include #include #include @@ -15,6 +17,7 @@ #include #include #include +#include #include #include @@ -34,7 +37,7 @@ static __init int init_emergency_pool(void) page_pool = mempool_create_page_pool(POOL_SIZE, 0); BUG_ON(!page_pool); - printk("bounce pool size: %d pages\n", POOL_SIZE); + pr_info("pool size: %d pages\n", POOL_SIZE); return 0; } @@ -86,7 +89,7 @@ int init_emergency_isa_pool(void) mempool_free_pages, (void *) 0); BUG_ON(!isa_page_pool); - printk("isa bounce pool size: %d pages\n", ISA_POOL_SIZE); + pr_info("isa pool size: %d pages\n", ISA_POOL_SIZE); return 0; } diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 16bc9fa42998..1c16c228f35a 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -65,6 +65,8 @@ kernel is not always grateful with that. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include #include #include @@ -91,6 +93,7 @@ #include #include #include +#include #include #include @@ -2645,7 +2648,7 @@ void __init numa_policy_init(void) node_set(prefer, interleave_nodes); if (do_set_mempolicy(MPOL_INTERLEAVE, 0, &interleave_nodes)) - printk("numa_policy_init: interleaving failed\n"); + pr_err("%s: interleaving failed\n", __func__); check_numabalancing_enable(); } diff --git a/mm/mmap.c b/mm/mmap.c index ced5efcdd4b6..129b847d30cc 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -6,6 +6,8 @@ * Address space accounting code */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include #include #include @@ -37,6 +39,7 @@ #include #include #include +#include #include #include @@ -361,20 +364,20 @@ static int browse_rb(struct rb_root *root) struct vm_area_struct *vma; vma = rb_entry(nd, struct vm_area_struct, vm_rb); if (vma->vm_start < prev) { - printk("vm_start %lx prev %lx\n", vma->vm_start, prev); + pr_info("vm_start %lx prev %lx\n", vma->vm_start, prev); bug = 1; } if (vma->vm_start < pend) { - printk("vm_start %lx pend %lx\n", vma->vm_start, pend); + pr_info("vm_start %lx pend %lx\n", vma->vm_start, pend); bug = 1; } if (vma->vm_start > vma->vm_end) { - printk("vm_end %lx < vm_start %lx\n", + pr_info("vm_end %lx < vm_start %lx\n", vma->vm_end, vma->vm_start); bug = 1; } if (vma->rb_subtree_gap != vma_compute_subtree_gap(vma)) { - printk("free gap %lx, correct %lx\n", + pr_info("free gap %lx, correct %lx\n", vma->rb_subtree_gap, vma_compute_subtree_gap(vma)); bug = 1; @@ -388,7 +391,7 @@ static int browse_rb(struct rb_root *root) for (nd = pn; nd; nd = rb_prev(nd)) j++; if (i != j) { - printk("backwards %d, forwards %d\n", j, i); + pr_info("backwards %d, forwards %d\n", j, i); bug = 1; } return bug ? -1 : i; @@ -423,17 +426,17 @@ static void validate_mm(struct mm_struct *mm) i++; } if (i != mm->map_count) { - printk("map_count %d vm_next %d\n", mm->map_count, i); + pr_info("map_count %d vm_next %d\n", mm->map_count, i); bug = 1; } if (highest_address != mm->highest_vm_end) { - printk("mm->highest_vm_end %lx, found %lx\n", + pr_info("mm->highest_vm_end %lx, found %lx\n", mm->highest_vm_end, highest_address); bug = 1; } i = browse_rb(&mm->mm_rb); if (i != mm->map_count) { - printk("map_count %d rb %d\n", mm->map_count, i); + pr_info("map_count %d rb %d\n", mm->map_count, i); bug = 1; } BUG_ON(bug); @@ -3280,7 +3283,7 @@ static struct notifier_block reserve_mem_nb = { static int __meminit init_reserve_notifier(void) { if (register_hotmemory_notifier(&reserve_mem_nb)) - printk("Failed registering memory add/remove notifier for admin reserve"); + pr_err("Failed registering memory add/remove notifier for admin reserve\n"); return 0; } diff --git a/mm/nommu.c b/mm/nommu.c index 85f8d6698d48..b78e3a8f5ee7 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -13,6 +13,8 @@ * Copyright (c) 2007-2010 Paul Mundt */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include #include #include @@ -32,6 +34,7 @@ #include #include #include +#include #include #include @@ -1246,7 +1249,7 @@ error_free: return ret; enomem: - printk("Allocation of length %lu from process %d (%s) failed\n", + pr_err("Allocation of length %lu from process %d (%s) failed\n", len, current->pid, current->comm); show_free_areas(0); return -ENOMEM; diff --git a/mm/vmscan.c b/mm/vmscan.c index f44476a41544..71f23c0c1090 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -11,6 +11,8 @@ * Multiqueue VM started 5.8.00, Rik van Riel. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include #include #include @@ -43,6 +45,7 @@ #include #include #include +#include #include #include @@ -480,7 +483,7 @@ static pageout_t pageout(struct page *page, struct address_space *mapping, if (page_has_private(page)) { if (try_to_free_buffers(page)) { ClearPageDirty(page); - printk("%s: orphaned page\n", __func__); + pr_info("%s: orphaned page\n", __func__); return PAGE_CLEAN; } } -- cgit v1.2.3 From 04cfac4e40b2b5dbaf8c0fc625878388a98bb9c6 Mon Sep 17 00:00:00 2001 From: Hani Benhabiles Date: Fri, 6 Jun 2014 14:38:30 -0700 Subject: nbd: zero from and len fields in NBD_CMD_DISCONNECT. Len field is already set to zero, but not the from field which is sent as 0xfffffffffffffe00. This makes no sense, and may cause confuse server implementations doing sanity checks (qemu-nbd is an example.) Signed-off-by: Hani Benhabiles Cc: Paul Clements Cc: Paul Clements Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/block/nbd.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 56a027d6115e..fb31b8ee4372 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -243,14 +243,11 @@ static int nbd_send_req(struct nbd_device *nbd, struct request *req) struct nbd_request request; unsigned long size = blk_rq_bytes(req); + memset(&request, 0, sizeof(request)); request.magic = htonl(NBD_REQUEST_MAGIC); request.type = htonl(nbd_cmd(req)); - if (nbd_cmd(req) == NBD_CMD_FLUSH) { - /* Other values are reserved for FLUSH requests. */ - request.from = 0; - request.len = 0; - } else { + if (nbd_cmd(req) != NBD_CMD_FLUSH && nbd_cmd(req) != NBD_CMD_DISC) { request.from = cpu_to_be64((u64)blk_rq_pos(req) << 9); request.len = htonl(size); } -- cgit v1.2.3 From ae022622ae9447bd70e59db7c91efa25c99a90d5 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 6 Jun 2014 14:38:31 -0700 Subject: idle: remove cpu_idle() forward declarations After all architectures were converted to the generic idle framework, commit d190e8195b90 ("idle: Remove GENERIC_IDLE_LOOP config switch") removed the last caller of cpu_idle(). The forward declarations in header files were forgotten. Signed-off-by: Geert Uytterhoeven Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/cpu.h | 1 - include/linux/smp.h | 2 -- 2 files changed, 3 deletions(-) diff --git a/include/linux/cpu.h b/include/linux/cpu.h index 81887120395c..95978ad7fcdd 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -256,7 +256,6 @@ enum cpuhp_state { }; void cpu_startup_entry(enum cpuhp_state state); -void cpu_idle(void); void cpu_idle_poll_ctrl(bool enable); diff --git a/include/linux/smp.h b/include/linux/smp.h index 633f5edd7470..34347f26be9b 100644 --- a/include/linux/smp.h +++ b/include/linux/smp.h @@ -13,8 +13,6 @@ #include #include -extern void cpu_idle(void); - typedef void (*smp_call_func_t)(void *info); struct call_single_data { struct llist_node llist; -- cgit v1.2.3 From 835eeeed73718b226318c82f7c636e1baff4f118 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 6 Jun 2014 14:38:32 -0700 Subject: cris: update comments for generic idle conversion As of commit 8dc7c5ecd8d0 ("cris: Use generic idle loop"), cris no longer provides cpu_idle(). - On cris-v10, etrax_gpio_wake_up_check() is called from default_idle() instead of cpu_idle(), - On cris-v32, etrax_gpio_wake_up_check() is not called from default_idle(), so remove this (copy-and-paste?) part. Signed-off-by: Geert Uytterhoeven Reviewed-by: Jesper Nilsson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/cris/arch-v10/drivers/gpio.c | 4 ++-- arch/cris/arch-v32/drivers/mach-fs/gpio.c | 6 +----- 2 files changed, 3 insertions(+), 7 deletions(-) diff --git a/arch/cris/arch-v10/drivers/gpio.c b/arch/cris/arch-v10/drivers/gpio.c index f4374bae4fb4..64285e0d3481 100644 --- a/arch/cris/arch-v10/drivers/gpio.c +++ b/arch/cris/arch-v10/drivers/gpio.c @@ -833,8 +833,8 @@ static int __init gpio_init(void) printk(KERN_INFO "ETRAX 100LX GPIO driver v2.5, (c) 2001-2008 " "Axis Communications AB\n"); /* We call etrax_gpio_wake_up_check() from timer interrupt and - * from cpu_idle() in kernel/process.c - * The check in cpu_idle() reduces latency from ~15 ms to ~6 ms + * from default_idle() in kernel/process.c + * The check in default_idle() reduces latency from ~15 ms to ~6 ms * in some tests. */ res = request_irq(TIMER0_IRQ_NBR, gpio_poll_timer_interrupt, diff --git a/arch/cris/arch-v32/drivers/mach-fs/gpio.c b/arch/cris/arch-v32/drivers/mach-fs/gpio.c index 9e54273af0ca..009f4ee1bd09 100644 --- a/arch/cris/arch-v32/drivers/mach-fs/gpio.c +++ b/arch/cris/arch-v32/drivers/mach-fs/gpio.c @@ -958,11 +958,7 @@ gpio_init(void) printk(KERN_INFO "ETRAX FS GPIO driver v2.5, (c) 2003-2007 " "Axis Communications AB\n"); - /* We call etrax_gpio_wake_up_check() from timer interrupt and - * from cpu_idle() in kernel/process.c - * The check in cpu_idle() reduces latency from ~15 ms to ~6 ms - * in some tests. - */ + /* We call etrax_gpio_wake_up_check() from timer interrupt */ if (request_irq(TIMER0_INTR_VECT, gpio_poll_timer_interrupt, IRQF_SHARED, "gpio poll", &alarmlist)) printk(KERN_ERR "timer0 irq for gpio\n"); -- cgit v1.2.3 From 0d2b7ea9287d39e87531d233ba885263e6160127 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 6 Jun 2014 14:38:33 -0700 Subject: powerpc: update comments for generic idle conversion As of commit 799fef06123f ("powerpc: Use generic idle loop"), this applies to arch_cpu_idle() instead of cpu_idle(). Signed-off-by: Geert Uytterhoeven Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/powerpc/kernel/irq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index ca1cd7459c4a..248ee7e5bebd 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -304,7 +304,7 @@ void notrace restore_interrupts(void) * being re-enabled and generally sanitized the lazy irq state, * and in the latter case it will leave with interrupts hard * disabled and marked as such, so the local_irq_enable() call - * in cpu_idle() will properly re-enable everything. + * in arch_cpu_idle() will properly re-enable everything. */ bool prep_irq_for_idle(void) { -- cgit v1.2.3 From 0244756edc4b98c129e92c7061d9f383708cf786 Mon Sep 17 00:00:00 2001 From: Fabian Frederick Date: Fri, 6 Jun 2014 14:38:34 -0700 Subject: ufs: sb mutex merge + mutex_destroy Commit 788257d6101d ("ufs: remove the BKL") replaced BKL with mutex protection using functions lock_ufs, unlock_ufs and struct mutex 'mutex' in sb_info. Commit b6963327e052 ("ufs: drop lock/unlock super") removed lock/unlock super and added struct mutex 's_lock' in sb_info. Those 2 mutexes are generally locked/unlocked at the same time except in allocation (balloc, ialloc). This patch merges the 2 mutexes and propagates first commit solution. It also adds mutex destruction before kfree during ufs_fill_super failure and ufs_put_super. [akpm@linux-foundation.org: avoid ifdefs, return -EROFS not -EINVAL] Signed-off-by: Fabian Frederick Cc: Evgeniy Dushistov Cc: "Chen, Jet" Cc: Wu Fengguang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ufs/balloc.c | 30 +++++++++++++++--------------- fs/ufs/ialloc.c | 17 ++++++++--------- fs/ufs/super.c | 28 ++++++++++------------------ fs/ufs/ufs.h | 1 - 4 files changed, 33 insertions(+), 43 deletions(-) diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c index 184323cac1a4..7bc20809c99e 100644 --- a/fs/ufs/balloc.c +++ b/fs/ufs/balloc.c @@ -52,7 +52,7 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count) if (ufs_fragnum(fragment) + count > uspi->s_fpg) ufs_error (sb, "ufs_free_fragments", "internal error"); - mutex_lock(&UFS_SB(sb)->s_lock); + lock_ufs(sb); cgno = ufs_dtog(uspi, fragment); bit = ufs_dtogd(uspi, fragment); @@ -116,12 +116,12 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count) ubh_sync_block(UCPI_UBH(ucpi)); ufs_mark_sb_dirty(sb); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT\n"); return; failed: - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT (FAILED)\n"); return; } @@ -151,7 +151,7 @@ void ufs_free_blocks(struct inode *inode, u64 fragment, unsigned count) goto failed; } - mutex_lock(&UFS_SB(sb)->s_lock); + lock_ufs(sb); do_more: overflow = 0; @@ -211,12 +211,12 @@ do_more: } ufs_mark_sb_dirty(sb); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT\n"); return; failed_unlock: - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); failed: UFSD("EXIT (FAILED)\n"); return; @@ -357,7 +357,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, usb1 = ubh_get_usb_first(uspi); *err = -ENOSPC; - mutex_lock(&UFS_SB(sb)->s_lock); + lock_ufs(sb); tmp = ufs_data_ptr_to_cpu(sb, p); if (count + ufs_fragnum(fragment) > uspi->s_fpb) { @@ -378,19 +378,19 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, "fragment %llu, tmp %llu\n", (unsigned long long)fragment, (unsigned long long)tmp); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); return INVBLOCK; } if (fragment < UFS_I(inode)->i_lastfrag) { UFSD("EXIT (ALREADY ALLOCATED)\n"); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); return 0; } } else { if (tmp) { UFSD("EXIT (ALREADY ALLOCATED)\n"); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); return 0; } } @@ -399,7 +399,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, * There is not enough space for user on the device */ if (!capable(CAP_SYS_RESOURCE) && ufs_freespace(uspi, UFS_MINFREE) <= 0) { - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT (FAILED)\n"); return 0; } @@ -424,7 +424,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, ufs_clear_frags(inode, result + oldcount, newcount - oldcount, locked_page != NULL); } - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT, result %llu\n", (unsigned long long)result); return result; } @@ -439,7 +439,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, fragment + count); ufs_clear_frags(inode, result + oldcount, newcount - oldcount, locked_page != NULL); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT, result %llu\n", (unsigned long long)result); return result; } @@ -477,7 +477,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, *err = 0; UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag, fragment + count); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); if (newcount < request) ufs_free_fragments (inode, result + newcount, request - newcount); ufs_free_fragments (inode, tmp, oldcount); @@ -485,7 +485,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, return result; } - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT (FAILED)\n"); return 0; } diff --git a/fs/ufs/ialloc.c b/fs/ufs/ialloc.c index 98f7211599ff..a9cc75ffa925 100644 --- a/fs/ufs/ialloc.c +++ b/fs/ufs/ialloc.c @@ -69,11 +69,11 @@ void ufs_free_inode (struct inode * inode) ino = inode->i_ino; - mutex_lock(&UFS_SB(sb)->s_lock); + lock_ufs(sb); if (!((ino > 1) && (ino < (uspi->s_ncg * uspi->s_ipg )))) { ufs_warning(sb, "ufs_free_inode", "reserved inode or nonexistent inode %u\n", ino); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); return; } @@ -81,7 +81,7 @@ void ufs_free_inode (struct inode * inode) bit = ufs_inotocgoff (ino); ucpi = ufs_load_cylinder (sb, cg); if (!ucpi) { - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); return; } ucg = ubh_get_ucg(UCPI_UBH(ucpi)); @@ -115,7 +115,7 @@ void ufs_free_inode (struct inode * inode) ubh_sync_block(UCPI_UBH(ucpi)); ufs_mark_sb_dirty(sb); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT\n"); } @@ -193,7 +193,7 @@ struct inode *ufs_new_inode(struct inode *dir, umode_t mode) sbi = UFS_SB(sb); uspi = sbi->s_uspi; - mutex_lock(&sbi->s_lock); + lock_ufs(sb); /* * Try to place the inode in its parent directory @@ -328,21 +328,20 @@ cg_found: sync_dirty_buffer(bh); brelse(bh); } - - mutex_unlock(&sbi->s_lock); + unlock_ufs(sb); UFSD("allocating inode %lu\n", inode->i_ino); UFSD("EXIT\n"); return inode; fail_remove_inode: - mutex_unlock(&sbi->s_lock); + unlock_ufs(sb); clear_nlink(inode); iput(inode); UFSD("EXIT (FAILED): err %d\n", err); return ERR_PTR(err); failed: - mutex_unlock(&sbi->s_lock); + unlock_ufs(sb); make_bad_inode(inode); iput (inode); UFSD("EXIT (FAILED): err %d\n", err); diff --git a/fs/ufs/super.c b/fs/ufs/super.c index c1183f9f69dc..b879f1ba3439 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -697,7 +697,6 @@ static int ufs_sync_fs(struct super_block *sb, int wait) unsigned flags; lock_ufs(sb); - mutex_lock(&UFS_SB(sb)->s_lock); UFSD("ENTER\n"); @@ -715,7 +714,6 @@ static int ufs_sync_fs(struct super_block *sb, int wait) ufs_put_cstotal(sb); UFSD("EXIT\n"); - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return 0; @@ -760,6 +758,7 @@ static void ufs_put_super(struct super_block *sb) ubh_brelse_uspi (sbi->s_uspi); kfree (sbi->s_uspi); + mutex_destroy(&sbi->mutex); kfree (sbi); sb->s_fs_info = NULL; UFSD("EXIT\n"); @@ -786,6 +785,14 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent) flags = 0; UFSD("ENTER\n"); + +#ifndef CONFIG_UFS_FS_WRITE + if (!(sb->s_flags & MS_RDONLY)) { + printk("ufs was compiled with read-only support, " + "can't be mounted as read-write\n"); + return -EROFS; + } +#endif sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL); if (!sbi) @@ -795,15 +802,7 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent) UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY)); -#ifndef CONFIG_UFS_FS_WRITE - if (!(sb->s_flags & MS_RDONLY)) { - printk("ufs was compiled with read-only support, " - "can't be mounted as read-write\n"); - goto failed; - } -#endif mutex_init(&sbi->mutex); - mutex_init(&sbi->s_lock); spin_lock_init(&sbi->work_lock); INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs); /* @@ -1257,6 +1256,7 @@ magic_found: return 0; failed: + mutex_destroy(&sbi->mutex); if (ubh) ubh_brelse_uspi (uspi); kfree (uspi); @@ -1280,7 +1280,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) sync_filesystem(sb); lock_ufs(sb); - mutex_lock(&UFS_SB(sb)->s_lock); uspi = UFS_SB(sb)->s_uspi; flags = UFS_SB(sb)->s_flags; usb1 = ubh_get_usb_first(uspi); @@ -1294,7 +1293,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) new_mount_opt = 0; ufs_set_opt (new_mount_opt, ONERROR_LOCK); if (!ufs_parse_options (data, &new_mount_opt)) { - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return -EINVAL; } @@ -1302,14 +1300,12 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) new_mount_opt |= ufstype; } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { printk("ufstype can't be changed during remount\n"); - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return -EINVAL; } if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) { UFS_SB(sb)->s_mount_opt = new_mount_opt; - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return 0; } @@ -1334,7 +1330,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) #ifndef CONFIG_UFS_FS_WRITE printk("ufs was compiled with read-only support, " "can't be mounted as read-write\n"); - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return -EINVAL; #else @@ -1344,13 +1339,11 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) ufstype != UFS_MOUNT_UFSTYPE_SUNx86 && ufstype != UFS_MOUNT_UFSTYPE_UFS2) { printk("this ufstype is read-only supported\n"); - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return -EINVAL; } if (!ufs_read_cylinder_structures(sb)) { printk("failed during remounting\n"); - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return -EPERM; } @@ -1358,7 +1351,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) #endif } UFS_SB(sb)->s_mount_opt = new_mount_opt; - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return 0; } diff --git a/fs/ufs/ufs.h b/fs/ufs/ufs.h index ff2c15ab81aa..343e6fc571e5 100644 --- a/fs/ufs/ufs.h +++ b/fs/ufs/ufs.h @@ -24,7 +24,6 @@ struct ufs_sb_info { int work_queued; /* non-zero if the delayed work is queued */ struct delayed_work sync_work; /* FS sync delayed work */ spinlock_t work_lock; /* protects sync_work and work_queued */ - struct mutex s_lock; }; struct ufs_inode_info { -- cgit v1.2.3